A111D1 7 2 2 1

7

Refaranca

NBS

Publications

NATL INST. OF STAND & TECH

A11107 3flbOSS

Collaborative Testing Services, Inc.

COLLABORATIVE REFERENCE PROGRAM

FOR RUBBER

ANALYSES NO. 43

JANUARY - MARCH 1980

rNBSIR 80-1835

1 1 V_ „ g ,

I

U.S. DEPARTMENT OF COMMERCE

National Bureau of Standards
NBS COLLABORATIVE REFERENCE PROGRAMS

TAPPI Paper and Board (6 times per year)

Bursting strength

Tearing strength

Tensile breaking strength

Elongation to break

Tensile energy absorption

Folding endurance

Stiffness

Air resistance

Grammage

Smoothness

Surface pick strength

K & N ink absorption

Moisture content

Opacity

Blue reflectance (brightness)

Specular gloss, 75°

Thickness

Concora (flat crush)

Ring crush

FKBG-API Containerboard (48 times per year)

Mullen burst of linerboard

Concora test of medium

MCCA Color and Appearance (4 times per year)

Gloss at 60°

Color and color difference

CTS Rubber (4 times per year)

Tensile strength, ultimate elongation and tensile stress

Hardness

Mooney viscosity

Vulcanization properties

ASTM Cement (2 times per year)

Chemical (11 chemical components)

Physical (15 characteristics)

AASHTO Bituminous

Asphalt cement (2 times per year)

Cutbacks (once a year)

NBS Collaborative Reference Program

A05 Technology Building

National Bureau of Standards

Washington, DC 20234

Rev. 10/79
NATIONAL burbau

or staktdabm

ZJBRABT

SEP i 9 1980

INTERLABORATORY PROGRAMS

FOR RUBBER

Analyses No. 43

January - March 1980

T. L. Cummings, Research Associate,

Collaborative Testing Services, Inc.

J. Horlick

Office of Testing Laboratory Evaluation Technology

Office of Engineering Standards

National Engineering Laboratory

G. W. Bullman

Polymers Science and Standards Division

Center for Materials Research

National Measurement Laboratory

U. S. DEPARTMENT OF COMMERCE

National Bureau of Standards

NBSIR 80-1835

ui

s

INTRODUCTION

This report summarizes the test results for the first quarter of 1980.

The tests cover the four areas in the NBS Collaborative Reference

Programs for Rubber: Tensile Properties, Hardness, Mooney Viscosity,

and Vulcanization Properties, The program is maintained and operated

by Collaborative Testing Services, Inc. (CTS) . CTS is a non-profit

organization of associations that offers CRP's to a wide range of

industries

For each of the four areas, there is a set of summary tables followed

by a table of data and analysis by laboratory and graphical presentation of the data and analysis. Where applicable, the tables of data have

the English and Metric expressions side-by-side. Also, shown in the

tables are notes concerning specific laboratory results and instrument,

unit or other variations. Additional details are given in the section

"Key to Tables and Graphs".

If there are questions or comments on the notes, the analyses, or the

reports in general, contact Thomas Cummings at (703) 442-0433 or

Je rr ” ’ • ’ '

Je: _ , rator

NBS Collaborative Reference Program

Office of Testing Laboratory Evaluation Technology

May 14, 1980
,

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; ,

,

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;
TABLE OF CONTENTS

Page

Introduction

Table of Contents 1

Key to Tables and Graphs 2

Program 1: Tensile strength, ultimate elongation

and stress at 300% elongation 5

Program 2: Hardness 13

Program 4: Mooney Viscosity 17

Program 5: Vulcanization characteristics determined

with oscillating-disk cure meter 21

1
KEY TO TABLES AND GRAPHS

LAB CODE Confidential laboratory identification number known only

to the participant and the Collaborative Reference Program

staff.

F A flag identifying results that are extreme in comparison

with the other results.

X - The plotted point for the indicated laboratory lies

outside of the 99% error ellipse (not shown); ie,

assuming normal distribution, 99% of laboratories

similar to those participating in the program will

be represented by points lying within the 99% ellipse.

* - The plotted point for the indicated laboratory lies

outside of the 95% error ellipse shown on graphs, but

inside the 99% ellipse.

MEAN The arithmetic average of the two median values for the two

sheets or samples of the same material.

% DEV The deviation or difference of the laboratory MEAN from the

GR. MEAN (see below) , expressed as a percent of the

GR. MEAN.

REL SDR The ratio of the SDR (standard deviation of replicate measurements within a laboratory) to the AVER SDR (see below) . Extreme values, ie, values that are likely to occur by chance

less than one time in a hundred as determined by the chisquare test, are marked with an "X".

VAR CODE A code number designating a particular test instrument, set

of environmental conditons, procedure, unit used, or other

variation. The code "01" designates the instrument, conditions

and procedure specified at the top of the page either explicitly

or in the cited ASTM Standard, and the unit of test shown at the

top of the first column of data. A '+' in front of the VAR CODE

indicates that the data has been excluded from the grand means

due to a non-standard variation of the possibilities mentioned

above, or the data is extreme.

’ft GR MEAN The arithmetic average (grand mean) of all the laboratory MEAN

values, excluding those flagged (F) with an "X".

SD MEANS The standard deviation among the laboratory MEAN values included in the GR. MEAN.

2
AVER SDR The arithmetic average of all the standard deviations of

within laboratory replication, excluding those excluded

from the GR. MEAN and excluding any additional ones for

which the REL SDR has been flagged.

GRAPH

For each laboratory the MEAN for the second material is plotted against

the MEAN for the first material, with each point representing a laboratory. The horizontal and vertical lines are the GR. MEAN values. The

dashed line is drawn at 45°. The solid sloping line, which may or may

not lie close to the 45° line, is the major axis of the ellipse. The

ellipse is drawn so that, on the average, it will include 95% of the

points representing the laboratories. The plotted symbols X and * used to

represent results falling outside the ellipse are explained under "F"

above. Laboratories inside the ellipse (no flag in the F column) are plotted as an 0.

The graph is plotted with an ellipse when there are 20 or more laboratories

in the analysis. When there are 10 through 19 laboratories in the analysis,

the graph is plotted but the ellipse is omitted. When there are fewer

than 10 laboratories retained in the Grand Mean the graph is not plotted.

For development of the theory, see the paper by J. Mandel and T.W. Lashof,

Interpretation and Generalization of Youden's Two-Sample Diagram, J. of

Quality Technology, Vol. 6, pp 22-36, Jan. 1974.

SUMMARY OF ANALYSES

LABS INCL Number of laboratories included in the GR. MEANs.

LABS OMIT Number of laboratories reporting data but excluded from

the GR. MEANS.

STANDARD DEVIATIONS

LABS Same as the SD MEANs (see above)

SHEETS Standard deviation between the two sheets or samples of the same material.

REPL Same as AVER SDR (see above)

PRECISION OF METHODS

REPL CRP The number of replicate measurements per sheet or sample,

as specified in the Collaborative Reference Program.

REPL ASTM The number of replicate measurements specified for a test

result in the designated ASTM Standard.

3
REPEAT The repeatability, a measure of the within laboratory precision,

i.e., of the ability of the test technician to repeat his test

result: two test results obtained by the same technician on

the same homogeneous sample of material may be expected 95% of

the time to agree within the repeatability.

REPROD The reproducibility, a measure of the between laboratory precision: two test results obtained in different laboratories

may be expected 95% of the time to agree within the reproducibility.

ABSOLUTE Values of REPEAT and REPROD expressed in the units of measurement

PERCENT Values of REPEAT and REPROD expressed as a percent of the GR.

MEANS.

4
'it ««Jk

REPORT 43 INTBClilflRATaST PROGRAM AN EVALUATION OP BOBBED

JANUARY 1900

TENSILE STRENGTH, ULTIMATE ELONGATION AND STRESS AT 300% ELONGATION

NOTES

v Materials A01 and A02 were sheets of the same vulcanized rubber, Similary, materials A03 and A04 were alike

V100 results were obtained at NBS using a pendulum tester.

All participants used Die C in ASTM D412 with the following exceptions 1

V178 did not specify a Die

V225 used ASTM Die D V171 used ASTM Die B V249 used ASTM Die A

INSTRUMENTS RELATIVE HUMIDITY

Instrument Number Relative Number

of Labs Percent Humidity of Labs Percent

Electronic Manual 20 31% Electronic Automatic 20 31% Pendulum Manual 20 31% Pendulum Automatic 2 3.5%

Not Specified 2 3.5%

Below 45% 29 45% Above 55% 10 16% 45% - 55% 15 23% Not Specified 10 16%

64 100% 64 100%

SUMMARY OF ANALYSES

LABS LABS STD DEVIATIONS

PFOPERTY MATERIAL INCI OMIT GR0 MEAN LABS SHEETS REPL UNITS

TENSILE AO 1 -AO 2 62 2 2309O aOo 63, 56, POUNDS PEB SCUAPE INCH STRENGTH AQ3-A04 62 2 2402o 75, 44, 57, POUNDS PEP SQUARE INCH TENSILE AO 1 -AO 2 62 2 160 475 ,549 ,436 , 309 MEGAPASCALS

STRENGTH A03-A04 62 2 I60 565 c 520 ,306 ,396 MEGAPASCALS

-

ULTIMATE A01-A02 62 2 56 lo 2 3o 9, 15, PERCENT ELONGATION A03-A04 62 2 560, 19, 9, 1 5o PERCENT

STRESS AT A01-A02 62 2 12200 72, 29, 21, POUNDS PER SQUARE INCB 300* ELONGATION A03-A04 62 2 12170 74, 21, 2 2, POUNDS FES SQUARE INCB stress AT AO 1 -AO 2 62 2 So 472 , 494 o 199 ,141 MEGAPASCALS

300* ELONGATION A 03 -A 04 62 2 Be 39 0 ,510 o 145 o 1 53 MEGAPASCALS

PRECISION eF METHODS

REPL REPL ABSOLUTE PERCENT

PFOPEFTY MATERIAL CRP ASTM GR, MEAN REPEAT REPSOD UNITS RBPEAT REFROD

TENSILE AO 1 -AO 2 5 5 2389, 156, 220, PSI 6, 5 9,2 STRENGTH A03-A04 5 5 2402o 1 59o 2C9, PSI 60 6 8,-'

TENSILE AO 1 “AO 2 5 5 16o 475 1, 077 1,5 19 MEGAPA 6, 5 9, 2 STRENGTH A03-A04 5 5 160 565 lo 098 1, 441 MEGAPA 6,6 8,7

ULTIMATE AO 1 -AO 2 5 5 56 lo 41, 63, « 7,2 11, 2 El ONGATION A03-A04 5 5 560o 43, 54, % 7,6 9, 6

STRESS AT AO 1 -A 0 2 5 5 1 2280 570 198o PSI 4,6 16, 1 300* ELONGATION A03-A04 5 5 1217, 6

0 205, PSI 5, 1 16, e STRESS AT AO 1 -AO 2 5 5 So 472 o 392 1, 36 e MEGAPA 4,6 16, 1 300* ELONGATION A03-A04 5

c 8o 39 0 , 424 1,411 MEGAPA 5, 1 16, e
REPORT 43 1 I NTERLABOFAT0RT PROGRAM ON EVALUATION OF RUBBER TENSILE STRBNGTH - POUNDS PER SQUARE INC1 JANUARY 1980 MATERIAL A01-A02 MATERIAL A03-A04 C0NMERCIAL TIRE TREAD C0MMERCY At TIRE TREAD

I AB REAR MEAN R EL MEAN NBAN % REL VAR cade p PST MBGAPA DEV •DR PSI NEGAPA DEV SDR CODE INSTRUMENT, UNIT, OR 0TBEE VARIATION

V0062 2245* 16*483 -6, 0 *81 2260* 15, 586 -5,9 1* 06 01

V*r 63 2 369* 16*341 -48 2449, 16, 890 2,0 1,13 0 1 VC070 2387, 16*462 -• » 1*33 2389M 16,476 -,5 1* 55 01 V0071 2421* 16*697 1,3 2386, 16, 459 -* 6 • 95 01 VCfT2 24'»0. 17,0 34 3*4 472 2465* 17*000 2*6 4 55 01

V00*^3 2325 16 034 -2- 7 ,78 2375, 16 379 -1 1 - 71 01 V0076 2430- 16-759 1-7 -93 2470- 17 034 2- 8 1 - 20 0 1 VO 0 83 2390- 16 4e3 0 ,69 2425, 16 724 1 0 -40 01

VO 0 84 2420 16 690 1 3 2c 15X 2425- 16 724 1 0 1 - 00 0 1 VO 085 2429 16 75* IcT - 60 2408c 16 604 2 1- 23 20 ORIGINAL IN NEGANEWTONS PEF so METEP

VC ~ 2400 16 552 5 -98 24 60- 16 966 2 4 1 - 11 0 1 vooe8 * 2170 14-oet -9 2 1- 17 2235, IS 417 -6 9 I- 70 0 1 V0092 2340c 16 i3e - 2 - 0 lc 0

1

2350, 16 207 -2 2 91 01

VO 095 2397 16 534 : 4 1-22 2410, 16 621 - 3 2 OOX 01

VO 100 2445 16 862 2- 3 2- 07 X 2415, 16 655 - 5 - 85 01

VC 1*2 2315 15 966 -3- 1 2- 23X 2425- 16 724 1-0 - 95 01

vo l l 1 2385 16 446 • 2 1-00 2375, 16 379 - 1 - 1 1 50 01

VC 1 17 2300 15 862 -3 7 -41 2337, 16 121 -2 7 2 03X 0 1 VO l 2* 2482 17-121 3- 9 lo 16 2476, 17 076 3 1 1 05 01

VO 123 2340c 16-138 - 2- 0 0 84 24 T0- 17 034 2 8 1 07 01

VC 126 2516 17 355 5 3 ,89 24 80: 17 104 3- 3 lc 33 20 ORIGINAL IN MEOANEWTONS PE F so METEF

VO 128 2470- 17- 034 3- 4 -91 2460, 16 966 2 4 78 01

VO 141 2359 16 272 - 1-2 - 50 2318- 15 9e6 -3- 5 1 09 0 1 VO 144 2510 17-310 5- 1 1 - 12 2585, 17 828 7, 6 - 80 0

1

V01 44B X 2460 16 966 3- 0 3-eix 2135c 14 724 -11 1 5 01X 0 1

VC 146 2370 16 345 - 8 lc 22 2391, 16 493 - 4 1 23 0

1

VC 149 2371 16- 355 - 7 lc 37 2412, 16 634 - 4 84 0

1

VC 150 2400- 16-552 - 5 1- 19 2325, 16 034 -3, 2 1- 29 01

VC 152 2435c 16-793 1-9 0 86 2380, 16- 4 14 •- 9 lc 04 01

VC 153 234 lo 16- 148 -2c e lose 23S9o 16 272 -1,8 1-36 0

1

VC 154 2455c 16-931 2c 8 1-48 2465, 17- 000 2- 6 -69 01

VC 156 2345c 16- 172 - 1 - e i-oe 2295c 15- 828 -4- 5 0 75 01

VO 158 2484- 17- 134 4c 0 leS3 2414, 16-649 -5 1-62 72 ORIGINAL IN NEGAPASCAI RECEIVED LATE

VO 1 60 2458- 1 6c 954 2-9 lc 1

1

2451- 16- 904 2,0 lo 24 20 ORIGINAL IN MEG ANEW tmjjc PEF «Q METEF

VO 1 64 2474- 1

7

0 066 3c 6 0 65 2438, 16- 817 1- 5 1, 58 01

VC 166 2 396- 16-524 -3 -64 2371c 16-352 -1,3 1- 17 01

VO 168 2516- 17- 352 So 3 -85 2S08o 17-300 4-4 -62 01

VC 169 2487, 17-154 4o 1 lo 44 2466, 17. 004 2-7 -92 20 ORIGINAL IN MEGANEWTONS PEF SO METEF

V01*M 2505c 17- 27e 4- 9 0 95 2490- 17- 172 3-7 1- 36 01

VO 176 2355c 16c 241 -1-4 1-22 2440, 16c 828 1- 6 - 36 0 1

VC 178 2360c 16- 276 -1c 2 0 70 2380c 16-414 -- 9 - 7© 0 1 VC 1 84 2260- 15-586 -5c 4 -92 2350c 16- 207 -2o 2 -74 0 1 V019C 2479- 17o 097 3c 8 lo03 24S3o 16- 921 2c 1 lc 82 01

VO 199 2415, 160 6SS 1- 1 1- 49 2335c 16- 103 -2- 8 1-21 0 1 VO 2 06 2475- 17-069 3c 6 1-74 24 60- 16- 966 2-4 0 94 0 1

VC 2C"7 2250 o 15,517 -Sc 8 0 52 226So 15-621 -So 7 - 40 01

VC 2 13 2 37 lo 16c 349 —

0

8 lc 17 2393- 16- 504 --4 - 80 20 ORIGINAL IN NEGANEWTONS PEF SO: METEF

VC 2 14 240Cc 16-554 06 0 6 3 241 So 16, 654 ,5 0 81 20 ORIGINAL IN MEGANEWTONS PEF SO METEF

V0220 2405c 16cSe6 c 7 lc 10 24620 16- 983 20 5 1-21 0 1 V0223 2445- 16- 862 2c 3 lc 07 2460, 16,966 2c 4 -92 0 1

VC 224 2382- 16-431 •:3 lc 26 2342- 16 155 -2c 5 lo 39 01

V* 225 2362- 16-293 -Ic 1 c 56 2403c 16- 572 -0 -72 01

VC 2 32 2480- 17- 104 3c 8 lo 17 2538, 17- 505 5- 7 1-76 20 ORIGINAL IN NEGANEWTONS PEF so METEF

VO 233 2335- 16c 103 -2c 3 1-32 24 06- 16- 597 -2 1- 10 01 V02 35 2343- 16-162 -lc 9 0 93 2272, 15- 672 -5,4 - 93 0 1 VC239 2262 15c 603 -5c 3 lo 07 2287c 15- 776 — 4o 0 1-49 0 1 VC 243 2 360- 16-414 —

0

4 lo02 2359c 16: 269 -lc 8 1,20 0 1 VO 244 2248 15- 504 -5c 9 0 67 2248, 15- 504 -6-4 -50 20 ORIGINAL IN NEGANEWTONS PEF so METEF V0245A 2360- 16-279 • lo 2 1-28 2396, 16- 524 —c 2 -52 0 1 V0245B 2546 17c 562 6c 6 0 52 24S3o 16-921 2, 1 -50 0 1

VC 249 2450- 16- 897 2-6 0 81 2525, 17,414 5- 1 -24 01 V0250 • 2287- 15c 776 • 4c 2 1-91 2462c 16- 983 2- 5 -90 01 V0252 2335- 16c 103 -2c 3 -78 2262, 15-603 -5c 8 o97 01 V0253 2252- 15-534 -5c 7 Ic 1 1 2348- 16- 193 -2, 2 0 77 0 1

2389* 16.475 - GR, MEAN • 2402, 16*565 5 TEST DETERNINATIONS

60, *548 • SD MEANS • 75, * 520 62 LABORATORIES IN GRAND MEANS

56* *389 • AVER SDR • 57, *396 64 LABORATORIES REPORTiro

PSI MECAPA • UNIT PSI NEGAPA

£
MATERIAL

A03-A04

TENSILE STRENGTH

MATERIAL A01-A02 2389. PSI MATERIAL A03-A04 2402. PSI

MATERIAL A01-A02

7
REPORT 4 3 1 INTEBLAB0RATOEY PR0GRAM 0N EVALUATI 0H 0F RUBBER ULTIMATE EL0NOATI0N - PERCENT JANUARY l*eC

MATEBIAl AOI-A02 MATERIAL A03-AC4 COMMERCIAL TIRE TREAD COMMERCIAL TIRE TREAD LAB MEAN • HBL MEAN % CADE P « DEV SDR S DEV V0062 531, -5,3 ,98 532, -4,9 V0C63 595* 6,0 .56 595, 6,3

VO 07 0 545* -2.9 1. 22 550, -1.7

V00"M X 513* -e.6 ,61 488, -12,5

V0072 530* -5,6 .75 540, -3,5 V0C73 585 4- 2 ,61 580, 3o 6 VO 076 540, -3c 8 1, 28 5450 -2,6

VO 003 54T -2c 5 ,95 555, -o 8 VO 004 5 35, -4,7 2, 01 X 550, -1,7

VO 005 575, 2,4 , 88 565. ,9

voce*? 520, -7, 3 ,59 527, -5, 8 VO 0 00 563, , 2 2, 32X 582, 4, 1 V00®2 550, -2, 0 , e6 555o -o 8 V0C<=5 535, -4,7 lo 05 535, -4,4

V01 00 560 -, 2 2, 0 1 X S45o -2,6

vr iC 2 540, -3, 8 1,87 555o -, 8

Vf 1 1

1

5 82, 3, 8 1, 44 569, lo 7 V01 IT 615, 9,6 ,47 595o 6,3

VO 1 20 560, -o 2 ,86 555o -o 8 VO 123 575o 2o 4 .70 580, 3.6

VO 126 595, 6,0 ,56 579. 3.5

voi 2 e 585, 4,2 c 9e 575. 2.7

VO 1 4

1

575, 2,4 .44 570. lo 6 VO 1 44 555, -lcl 1. 16 570. 1.8 V0144B 565, .6 lo 43 560. . 1

VO 146 se 2. 3,8 lo 2 1 572o 2.3

VO 1 49 5S0o -2,0 lo 28 572. 2. 3 VOISO 56

0

o 2 1. 19 570. 1.8

VO 152 555, -1,1 .61 565. .9

VO 1 63 5 SO, -2,0 1,00 550. -1.7

VO 154 545, - 2o 9 1,67 540. -3.5

VO 156 570, 1.5 1,08 570. l.e voise 590, £. 1 1.37 570. i.e VO 1 6 0 590o s« 1 1,45 580o 3.6

VO 1 64 565, .6 .26 5 47. -2. 2

VC1 166 560, -o 2 ,46 550. -1.7

VO 160 550, -2oO .65 560. • 1 VO 169 sea. 3.8 1,37 575o 2,7

VO 1 7 1 555, -1,1 lo 11 SSOo -1.7

VO 176 570, l.S lo 27 585. 4,5

VO 170 581, 3,6 .50 569o 1.7 VO 1 04 540, -3,8 1, 12 SSOo -1.7

VO 1 90 577, 2o« -.83 5720 2. 3 VO 1 99 59 0o 5,1 1,33 570© 1.8 V0206 535, -4.7 lo 34 . 552 0 . -1.3 V02C7 * 60S, 7,8 .37 6 10,- .9.0 VO 213 5S0o -2.0 1.30 540, -2. 1 VC 214 580, 3,3 lo 22 575, 2.7 V0220 • 502, . -10,5 c 65 505, -9,8 V0223 560, -o 2 1. ifc SS5o -.8

VC 224 595, 6.0 o 9)7 580, 3.6

VO 225 5 35, -4,7 0 ei 530, -5, 3 V0232 5870 4.7 lo 29 582, 4, 1 VO 233 525, -6,5 ,93 545, -2,6 V0235 577, 2,8 .89 565. ,9

VC 239 575, 2,4 o 8 1 565, o 9 VO 2 43 565, © 6 ,99 560, o 1 V0244 520, -7,4 c 70 520o -7. 1 V0245A * 555, -1, 1 lo 05 530o -5,3 V0245B 560, —, 2 o 89 535o -4,4

VC 249 580, 3,3 ,47 570o lo 8 V0250 550, -2.0 1,75 550, -1,7 V0252 570, 1.5 1,35 555, -o 8 VO 253 S45, -2,9 ,97 55So -, 8

561* - OR, MEAN • 560,

23. • SD MEANS * 19,

15, * AVER SDH * 15.

« • UNIT «

REI VAR

4DE CODE INSTRUMENT, UNI'*', OR OTBEF VARIATION

If 04 01 ,ee o i 1,34 01 1,21 01 1,31 01 ,52 01

1,01 01 ,43 01 1,1C 01 1,26 01

1,01 01

2, 62X 01 ,73 01 1-91 01 1,28 01

? 90 0 1 ,95 0 1 2 ,iex oi ,76 01 ,53 0 1

lo 29 01

o 5 C 01

o 79 01

o 6 C 01

1 o 4 C 01

1,12 01 ,70 0 1 1 o 4 3 01 ,52 01

o 5C 0 1 ,eo oi

,56 01

1 o 4 3 *70 DATA RECEIVED LATE

1 o 2 2 01 ,5£ 01

1,31 01 ,93 01 1,02 01 1,67 01 ,81 01

,77 01 ,79 0 1 1,86 01 1431 01 «e9 . 01

*,66 . 0 1 r, os . oi ,76 0 1 ,28 01 ,ee oi

1,07 01 1,01 01 1,72 01 1,14 01 ,73 01

1,50 01 1.05 01 ,44 0

1

lo 78 01 loOC 01 ,47 01 ,82 0 1 1.06 01 ,65 0

1

5 TEST DETERMINATIONS

62 LABORATORIES IN GRAND MEANS

64 LABORATORIES REPORTING
MATERIAL

A03-A04

ULTIMATE ELONGATION

MATERIAL A01-A02 561. MATERIAL A03-A04 560. Z.

9
REFORT 43 t INTBRLAB0RAT6EY PROGRAM 0N EVAt CATION OF BUBEER

STRESS AT 300* ELONGATION - POUNDS PEB SQUARE INCB J AN C APT 1900 MATERIAL A0I-A02 MATERIAL A03-A04 COMMERCIAL TIRE TREAD COMMERCIAL TIRE TREAD

LAB MEAN MEAN * REL MEAN MEAN * REL VAR CODE F PSI UEGAPA DEV SDR PSI MEGAPA DEV SDR CODE INSTRUMENT, UNIT, OR OTHER VARIATION

V0062 1225® 0.440 -*3 1,33 1225, 8,448 .7 ,94 01

VO 063 • 1 C 87® 7.49 7 -11,5 »43 1 1 58, 7, 99 0 -4,e .43 0 1 VOO^O 1257, 8,667 2,3 1,57 1227, 0® 462 ,9 1, 29 01 V0071 « 1419® 5,7 86 15,5 2,08X 1445, 9,969 18, 8 1.06 0 1 VO 072 1310, 5,034 6,6 2,063 3.305, 9® 000 7,3 1,44 0 1 V0C73 1 175o 8, 102 -4C 4 to 18 13 50. 7C 931 -5C 5 o 95 01 V0076 1325c 9, 138 7,5 o 56 1305o <5,000 70 3 o 55 01

VO 0 83 1280 o 8c 828 4o 2 ,64 12470 8o6C3 2o 5 ,78 01 vooe4 1275^ ec 7?3 3,8 1 o 07 12700 8, 759 4,4 lo 17 01 vooes 12550 8o652 2, 1 lo 38 12330 ec 502 1,3 lo 64 20 ORIGINAL IN MEGANERTONS PEP so METFP

VC 0 8*7 1400c 9,655 14c 0 lo 50 3 3 85c 5o 552 13o 8 lo 05 01 vooee 1120c 70 724 - 0o e ,67 1 090o 70 5 17 -10,4 1,45 01 V0092 1 190o 8,207 -3, a 1, 30 1 140o 7c 062 -6o 3 , 81 0 1 V0095 1 26 0c 8,69C 2c 6 2, 22X 1 225c e, 448 ,7 2o 00 X 0 1 VO 1 00 1240c 80 5S2 c 9 1, 40 3195o 8c 241 -lo 8 1,07 01

VC 1C2 1 185r ec 172 -3, 5 ,95 3 2 10o 8c 345 -o5 ,82 01 vein 1200c ec 276 -2,3 lo 12 1 1 95o e0 24 1 -1, 8 lo 05 01

V? 1 17 X icoOo 6, 85 7 -ie0 6 o 84 1O07O 7,500 -10,6 o 98 0 1 VC 1 2r 1290 o 8c 857 SoC o75 1 27 lo e0 769 4,5 lo 02 0 1 VO 123 1135c 7, e2e -7C 6 ,74 13 95o e c 24 1 -lo 8 o 52 01

VO I 26 l 191 c 8C 217 -3C C 1,28 1 195o ec 242 -1,8 o 47 20 ORIGINAL IN MEGANERTONS PEP so ME^EP

VO 1 28 1255c 8c 65 6 2,2 o 85 1235o 8c 517 lo 5 o 84 01

VO 1 4 1 1210c 6o 348 -lc 5 o 58 1228c eQ 469 c 9 o 51 0 1 VO 144 1250c e 0 62 1 lo 8 o 80 1 250c 8o 621 2, 8 lo 29 01 V0144B * 1265c 8o 724 3, 0 6o 8 1

3

3 1 30o 7,7*3 -7, 1 4o 68X 31

VO 146 1 136c 7c 838 —7c S lo 04 1 1 16o 7c 697 -8o 3 lo 27 01 VC 149 1222c 8,428 -o 5 ,74 3 3 35c 7c 828 -6,7 o 7C 0 1 VC 15C 1225c e,44e -c 3 o 79 1145, 7o 897 -5,9 , 36 0 1 VC 152 126C- 8, 690 2, 6 o 67 1 1 60o 8c 000 -4, 6 o 48 0 1 vr 153 12560 8,666 2c 3 2o 52X 3 200, 8o 276 -1,4 2o 1 1 3 0 1

VC 1 54 129C0 8, 057 SoO o 98 3 300o B 0 966 6o 9 o 73 0 1 VC 156 12C5c 8,310 -lc 9 ,47 1 1 30o 7o 7 93 -7, 1 o 94 01

VC 158 1218c 8,402 8 1,70 1204, 8c 302 -1,0 lo 99 ‘72 ORIGINAL IN MEGAPASCAL RECEIVED LATE

VC 1 60 126 9c e, 752 3o 3 lo 27 1255o 8r 652 3, l , 85 20 ORIGINAL IN MEGANERTONS PEP so METEP

VO 1 6 4 1256c e c 666 2c 3 lo 33 1250o Co 621 2o e , 94 01 VO 166 1208c e,33

1

-1,7 lo 17 1 197o ec 2 59 - 1 o 6 lo 43 01 VO 168 i27l r So 766 3o 5 lo 42 1258o e0 676 3, 4 lo 05 0 1 VO 1 69 1233c 8,502 c 4 o 80 121 lo 8C 352 — , 4 o 73 20 ORIGINAL IN MEGANERTONS PEP SQ METE*

VO l 7

1

1305o 9o 00 0 6c 2 o 22 1 2 850 8c 862 5, 6 lo 74 31 VO 176 1 180o e, i3e -3o 9 lo42 1200o 8 0 276 -1,4 lo 57 01 VC 178 1 175o e 0 102 = 4, 4 lo 02 12C5o 8c 310 -, 9 lo 05 01 VC 1 84 1207o e0 32e -1,7 ,84 1252, 8o 638 3,0 ,73 0 1 VC 190 1257c 8c 672 2,4 o 49 1265o 8o 7 2

4

4,0 o 52 01

VO 1 99 1220o e0 4i4 -o 7 lo 66 1 166c 8o 045 -4, 1 lo 02 0 1 V0206 1345c 5, 27 6 90 5 lo 17 1 3 20o 9 3 103 8,5 lo 14 0 1 V0207 • 1050c 7, 24 1 -14, 5 lo 70 1020c 7r, 0 34 -16, 2 lo 16 0 1 VC 2 13 12480 8o 607 lo 6 o64 124 70 8o 597 2, 5 o 91 20 ORIGINAL IN MEOANERT0NS PEP SQ, NETEP

V0214 121 lo e0 3£2 — 1 o 4 o 16 1 17So e c 102 -3,4 o 19 20 ORIGINAL IN MEGANERTONS PEP so. METEP

V0220 1267c e,74i 3c 2 o 92 3 2 25o ec 4 48 ,7 o 64 01 VO 223 P255c 0c 6 55 2,2 o 72 1240, ec 552 1,9 lo 07 0 1

VC 224 ri450 7, 85 7 -6c 8 o 25 1 1 15o 7,690 -8, 3 1, 38 0 1 VC 225 1367c 5c43 1 1 1,3 1, 10 1 366, 9,421 1 2, 3 lo 38 0 1 V0232 1211c 8o 352 - 1 c 4 lo 12 1 1970 8, 252 -1,6 to 10 20 ORIGINAL IN MECANERTONS PEP so METEP

V0233 1287 0 e0 e75 4,e lo 37 3 264o 8c 7 17 3o 9 o 95 01 V0235 1178c e, 1 28 -4c 1 o 78 1 150o 7,934 -5o 4 lo 28 01

VC 238 • 1050o 70 24 1 - 1 4o 5 o 27 1100, 70 5 86 -90 6 ,00 01

vr 243 1 164c e o 03 l -5, 2 o 46 1 1 6 lo 8 o 007 -4,6 lo 22 0 1 VC 244 1 1750 8 0 102 -4C 4 lo 6 1 1 1 89, e, 202 -2c 2 o 63 20 OPIGINAL IN MEGANERTONS PEP SQ METEP V0245A 12230 8,434 —c 4 2o 2 ex 1252, e0 634 2,9 2, 66 X 0 1 VC 245B 1259o e,6e3 2o 5 2c 26X 1 30 lo e,972 6,9 2o 91 X 0 1

VC 249 1250c 8c 621 1, 8 lo 52 125Co 8o 6 2 1 2o S o 50 01 V0250 • 1 150o 7 0 53 1 -6o 4 20 20

X

1250, e, 621 2,6 1,19 0 1 VO 252 1 1350 7, 828 -7c 6 lo 14 1110, 7, 655 -8- 8 lo 09 0 1 VO 253 1218c e,40c —c 9 o eo 1250, 621 2, 8 o 55 01

1 228, 8,472 - GR© MEAN 1217, 8* 39 0 5 TEST DETERMINATIONS

,454 - SD MEANS • 74, • 510 62 LABORATORIES IN GRAND MEANS

21« ,141 - AVEP SDP ® 2 2, • 153 64 LABORATORIES REPOPTJNG

PSI MEGAPA - tN IT PSI MEGAPA

10
MATERIAL

A03-A04

STRESS AT 3007. ELONGATION

MATERIAL A01-A02 1228. PSI MATERIAL A03-A04 1217. PSI

11
j

'
1

•• '

FEFflPT 43-2 INTER! ABORATORY PROGRAM ON EVALUATION OF SU8BB8

JANUARY 1980

HARDNESS

NOTES

Materials A01 and A02 were sheets of the same vulcanized rubber. Similarly, materials A03 and A04 were alike.

V100 results were obtained at NBS using ASTM D1415

V200 results were obtained at NBS using ASTM D2240

Four of the 31 participants reporting used ASTM D1415 (Wallace)

for hardness determination. All others used ASTM D22A0 (Type A Durometer).

SUMMARY OF ANALYSES

LABS LAES STD DEVIATIONS

PROPERTY MATEPIAL INCL OMIT GEo MEAN LAES SHEETS RE PL UNITS

HARDNESS A01-AQ2 3 1 0 6 1 0 63 2o 45 o 15 o*6 I®BD A03-A04 31 0 6 lo 34 2 a 44 o 20 0*1 IPHD

PRECISION OF METHODS

PROPERTY MATERIAL

REEL

CEP REPLASTM GRo MEAN BARDNESS AO 1 -AO 2 5 5 6 1 0 63

A03-A04 5 S 6 to 34

ABSOLUTE PERCENT REPEAT REP ROE UNITS REPEAT REPRflD

lo 27 6,79 IBRD 2o 1 11,0

to 14 6,7* IRBD 1,9 11,0

13
INTERLABORATORY PROGRAM ON EVALUATION OF RUBBER

REF6PT 43-2 BARDNESS - IBBD JANUARY 19eC MATERIA I A01-A02 MATERIAL A03-A04

C0MMEFCIAL TIRE IFF AD COMMERCIAL TSBE TIE AD LAB MEAN % BEL MEAN % PEL VAB CODE F IFHD DEV SDB IBBD DEV SDB CODE INSTRUMENT, UNIT. 0F OTBEE VARIATION

V0062 60,75 -i»4 1, 57 60,50 -»,4 1,20 01 V0C70 64,00 3,8 1. 20 65,00 6,0 1,75 01 VO 07 1 61,00 -1,0 1,55 61,00 -.5 2, 4 C7 0 1 VO 072 63,00 2,2 1, 20 62,00 U 1 1,21 01 VO 084 62,00 ,6 ,98 61,50 .3 .54 01 voces 64 c 00 3o 8 1, 17 64e 25 4oT o 62 0 1 vooes 60,50 -lc8 lo 75 60o 50 - lo 4 2o 037 01 vooe7 60o 00 -2o6 lo 89X 60o 00 -2o2 lo 52 01 V0C92 65c 00 50 5 lo 83 65o 00 CoO 2,347 01 VO 005 63o 00 2o2 o 00 630 00 2o 7 o OC 01

VO 100 60c 90 -lo2 1,58 60o 50 — lo 4 1 , 4 € 01 VO 102 65c 50 6o 3 lo 09 65© OC 6o 0 ,66 0 1 V01 11 64, 00 3c 8 lo 09 6 3o 00 2o7 io oe 0 1 V01 28 58c 50 -5, l ,49 58© 00 -5o4 ,54 01

VO 1 4 1 • 55o 50 -So9 lo 40 540 50 -llol 2o 3C7 01

VC 144 65, CO 5,5 ,60 64© 5© So 2 lo 2 1 01 V01 44B 640 50 4c 7 1, 20 64,50 5,2 i 0 oe 01

VO 168 63o 75 3,4 c 49 6 3o 00 2o7 ,54 0 1 VO 1 60 61 c 00 - lo 0 c 49 6 lo 00 -cS 1 , oe 0 1 VO 1 7

1

62o 00 c 6 o 98 6 lo 00 -o 5 o 66 0 1

VC 176 61c 00 -1,0 , 64 60o 75 - lo

C

, 9 4 01

VC 100 62, CO , 6 ,49 6 lo 50 ,3 lo 2 1 01 V0200 61c 25 -,6 ,76 60o 75 -loO lo 12 0 1 V0206 59c 25 -3c 9 lo 39 59o75 - 2o 6 2o 1CX 01 V0214 64 0 55 4 o 7 o 23 6 2o 95 2o 6 o 17 0 1

VO 2 24 6 lo ©0 - 1,0 o 49 6 lo 50 o 3 ,66 0 1 VC 233 57,00 -7,5 lo 09 57c 00 -7, 1 ,00 01

VO 235 61c 50 -c 2 lo 09 6@o 00 -2o 2 1,33 01 VC 243 60c 50 — 1 c 8 ,49 60o 50 - lo 4 oOC 01

VC 244 57c 50 -6,7 ,49 5 So 00 - 5o 4 o 54 01 VC 253 o o oC - 1,0 0 © © 6 lo 00 -o5 ,0C 01 61,63 - GB, MEAN - 61,34 5 TEST DETERMINATIONS

2,45 - 8D MEANS • 2,44 31 LABCBAI0RIES IN GRAND MEANS

,46 - AVEB SDK - .41 31 LABORATORIES REPORTING

TFBD • ON IT IBBD

14
MATERIAL

A03-A04

HARDNESS

MATERIAL A01-A02 61-63 IRHD MATERIAL A03-A04 61-34 IRHD

15

RESfPT

INTEFL AB6RAT0RY PROGRAM *

, N EVALUATION OF RUBBER

MARCH 1960

MOONEY VISCOSITY

NOTES

Materials ROl and R02 were the same rubber. Similarly, materials

R03 and R04 were the same rubber. No sample preparation was required

for materials R91 and R92 whereas, mill massing was required for materials R03 and R04.

V100 results were obtained at NBS on the manually closed viscometer

used for determining the Mooney viscosities of the standard rubbers.

SUMMARY OF ANALYSES

LABS LABS STD DFVI ATIONS PR6FERTY MATERIAL TNCI OMIT GF0 MEAN LAES SHEETS REEL CNI7S

MCf NEY EC1-FC2 3<? 7 6 7© 86 2c 25 o 14 c35 Ml

I SCfSITY FC3-FC4 39 7 650 43 3,C3 o 6 6 ,53 ML

PRECI SIGN OF METHODS

PEPI REPL ABSOLUTE PERCENT PFCPEFTY MATERIAL CPP ASTM GPo MEAN REPEAT REPROE vvns REPEAT REPP"D

MCeNEY PO I-H02 a 3 67c 66 i?-* 6,33 ML lo 4 c0 3 VTSCtfSITY R03-RC4 3 3 6 50 4 3 i o 46 e,3e ML 2o 2 12o 8

17
INTEPI ABOPATflRY PROGRAM ON EVALUATION OF RIEEE5

®FP<°9T 4 2 - 4 M06NEY VISCOSITY - ML MA^C" lCPr

MATERIAL R01- RC2 MATERIAL RC3- P04 BUTYL RUBBER EBP

l AB MEAN % R EL MEAN * PEI VAR CADE F ML DEV SDR ML DEV SDR CADE INSTRUMENT , UNIT, OR r'TP E F VARIATION

V0060 69,50 2*4 .41 6 9, 2 5 5. e 1.4S 31 VO 06 1

k 66, 85 -1.5 1, 70 66,70 l»s .74 01

VO 0 7 1 68, 1 5 .4 , 36 67, 80 3.6 . 1 1 0 1 VO 0 72 67,00 -1.3 1, 24 6 2,50 -4. 5 1.64 01

VO 073 66, 25 -2,4 1* 24 5 8,25 - 1 1. 0 1,54 0 1

vr^"»7 X 67^ 65 •o 3 .-,44 53o 4 5 -ie 0 3 ,21 01

vcr 7 8 62r 90 -7 0 3 2 0 28 6 2o 4 5 -4„ 6 1,09 0 1 vroer 68- 80 lo4 20 42X 6 4 0 5 0 - 1 o 4 1,53 31 VC* 83 ->0- $o 3,2 1. 95 6 80 4 0 4,5 1-23 01 voces 72-75 7o 2 lo 24 70c 00 7 0 0 o 55 O 1

VO r 87 6 8 00 o 2 c €3 6 4 0 5 0 - lo4 lo 54 01

vcr 9T X 7 1 00 4 0 6 lo e i 62 DATA MISSING

VOCC? 67. 00 - lo 3 lo 65 6 90 5 0 to 2 1, 1C 0 1 VCC95 67. 75 -o 2 lc 92 64o 50 - lc 4 o 73 0 1 V01 CO 68 c 55 1.0 o 47 6 60 3 0 1,3 - 34 01

V' 1 1

1

* 62 0 45 -e 0 o l. 01 5 80 00 -1 lo4 ,46 0 1 V*“ 1 17 66 -> 50 -2 o 0 lo 54 6 70 2 5 a, s - 75 0 1 vr i 28 7C.00 2o 2 2 o 01X 6 9o 50 6, 2 1,50 0 l VO 1 44 CD cr c lo 4 o?e 630 80 -2,5 ,56 0 1 VO 1 46 69. 50 2 C 4 2o 26 60o 50 4o 7 1 o 5 C 01

vr 1 49 69- 55 2o 5 lo 24 690 20 So 8 1,74 0 1 V01 50 68. 00 o 2 o 63 680 00 3o 9 1 o 5 C 01 VO 1 56 65o25 -2o 8 o 00 630 00 -3,7 io ca 0 1 VO 1 66 66c 25 -2o 4 o 00 6 40 2 5 -ice o 27 01 VO 169 X 75- 00 1 Co 5 o e3 670 7

5

2 0 S n ea 70 DATA RECEIVED TATE

VC 1 1~> 6 8. 25 o 6 lo 13 63o 75 - 2o 6 - 60 73 DATA RECEIVED LATE

VC 1 7 8 69. 50 2. 4 : 7 2 660 15 lo 1 1,63 0 1 VO 1 £2 6e c 75 1.3 lo 13 66c 5 0 1 o 6 o 27 0 1 VO 1 90 66. 50 -2. 0 c 51 6 2C 4 0 -4o 6 lo 15 3 1 VO 2 0 T ee c 7 o 1 o 2 o 46 6 50 3 0 -o 2 o 7 1 0 1

VC 2 1 1 6 8- 50 o 9 o 63 640 00 - 2o 2 oOO 0 1 V** 2 1 3 68. 00 O 2 o 41 650 75 o5 , 27 01 V02 14 66- O0 -2C 7 o 4 1 66o 00 ,9 ,27 01 V02 1*” 66. 75 «lc6 o 2 1 6 50 75 o S c 7 5 0 l VO 2 18 67-50 -. 5 o 63 670 75 3o 5 o 27 01

Vf 22* 66., 15 -2o5 lo 2 1 6 1 o 9C -So 4 1 ,40 7 1 vr 221 » 73. 25 7.9 o 41 66o 50 lo 6 1,37 01

vr 223 69. O0 lc 7 o 4 1 67o50 So 2 o 7 5 0 1 VO 2 30 X 68.90 lo 5 lo 2 1 5 5o 6 0 - 1 So 0 1 - 06 0 1 V0236 * 71 0 50 Sc 4 lo 65 620 50 -40 S lo 1C 0 1

VC 238 66 0 50 -2c? o 83 65o 00 —o 7 1,64 0 1 V* 2 4 4 67.00 - lo 3 3c eix 59o C0 -5,8 lo 10 70 DATA RECEIVED LATE

VC 249 65. 50 -3o5 lo 13 670 50 3o 2 c 00 70 DATA RECEIVED LATE V0257 68c 95 lo 6 o 52 66o 10 lc" -56 0 1 VO 252 68. 20 o5 .21 67o 65 So 4 ,65 0 1

VO 253 6 3c 00 a .00 5 9. CO - o ,05 *> 1

67, 86 “ GP, MEAN • 65, 43 3 TEST DETERMINATIONS

2, 29 • SD MEANS • 3,03 39 LABeRATORIES IN GP AND MEANS ,35 - AVEF SDR - .53 46 LABORATORIES REPORTING

ML • UNIT ML

18
MATER

I

RL

R03-R04

MOONEY VISCOSITY

MATERIAL R01-R02 67-86 ML MATERIAL R03-R04 65-43 ML

19

REP 6 RT 4 3 TNTEF LABORATORY PRAGRAR ON EVALUATION OP RUBBER MARCH 1980

VULCANIZATION CHARACTERISTICS USING OSCILLATING DISK CURE METER

NOTES

Materials W01 and W02 were the same rubber formulation. Similarly, materials W03 and W04 were alike.

V1Q0 results were obtained at NBS using a Model TM-100 Monsanto

Rheometer with a disk oscillating at +1° amplitude and 1.7 hertz

frequency.

SUMMARY OF ANALYSES

LAES LABS STD DEVIATIONS

PROPERTY MATERIAL I NCI OMIT GR0 MEAN LAES SHEETS REPL UNITS

scofcb * 0 l -MO 2 34 4 4 3 60 o 39 o 0 4 o 05 MINUTES

TIME W03-WQ4 34 4 4 0 28 o 4 1 o03 o 05 MINUTES

CUFE TIME WO 1 -MO 2 32 6 60 6 1 o 38 o 02 o 06 MINUTES

( 50* MH ) W03-W04 32 6 6o 3 8 o 37 o 02 o 05 MINUTES

CUFE TIME WO 1 - WO 2 32 9 90 6 2 o 57 o 0 4 o 1 1 MINUTES

(90* MH ) W03-W04 32 9 90 8 2 o se o 03 o 10 MINUTES

MINIMUM WO 1 -WO 2 3 1 7 50 03 o 38 o 03 c 08 POUND-INCHES

TOFCUE W03-W04 31 7 5o 03 o 36 o 0 2 o 07 POUND-INCHES

MINIMUM WO 1-W02 31 7 o 5682 o 0431 c 0034 c 0091 NEWTON-METERS

TOFCUE W03-W04 31 7 o 5680 o 04C4 o 0 026 , 008 1 NEWTON-METERS

MAXIMUM WO 1-W02 34 4 230 6 2 lo 26 o07 o 13 POUND - INCHES TOFCUE W03-W04 34 4 22o 72 lo 1 1 c 0 5 o 09 POUND - I NCBES MAXIMUM WO 1 -WO 2 34 4 20 6692 o 1 4ie O Oi 06 ,0151 NEWTON-METERS

TOFCUE W03-W04 34 4 20 566 8 o 1254 o 0076 o 0 1 04 NEWTON-METERS

PROPERTY MATERIAL

REPL

CRP BEPLASTM

PRECISIAN eF

GR0 MEAN

METHODS

ABSOLUTE

REPEAT REPROE UNITS PERCENT

REPEAT RETROD

SCCRCB W01 -W 02 3 3 4o 60 ,14 0 O MINUTE 3, 1 23c 4 TIME W03-W04 3 3 4,2 8 ,14 lo 13 MINUTE 3o 2 26, 5

CUFE TIME W 01 -W02 3 3 6,6 1 , 16 1,04 MINUTE 2, 4 is, e

( 50* MH ) W03-W04 3 2 6,38 o 14 lo 04 MINUTE 2 o 2 16, 2

CUFE TIME W01-W02 3 3 9,62 o 32 1,58 MINUTE 2o 3 16, 4

( 90* MH ) W03-W04 3 3 9,82 ,27 i,ec MINUTE 2o 7 16o 3

MINIMUM WO 1-W02 3 3 5o 03 ,22 loOe LB-INo 4o 4 21 c o TOFCUE W03-W04 3 3 5o C 3 o 20 ,99 LB-INo 3c 9 19,7 MINIMUM WO 1 -WO 2 3 3 o 5682 c 0252 o 1 19 5 N-M 4, 4 21, 0 TOFCUE W03-W04 3 3 o 5680 c 0223 o 1 12C N-M 3o 9 19, 7

MAXIMUM W01-WC2 3 3 23o62 ,37 3,4 8 LB-IN0 lo 6 14, 7 TOFCUE W03-W04 3 3 220 72 o 26 3o 0 8 LB-INo 1 , 1 13, 5 MAXIMUM WO 1 -WO 2 3 3 2,6692 r 0419 o 3928 N-M 1 , 6 14,7 TOFCUE W03-W04 3 3 2o 566 8 c oze? o 3475 N-M lo 1 13, 5

21
IN TER LABS BAT ©BY PROGRAM ON EVALUATION ©F RUBBER

REPORT 43 - 5 scflsca TIME - MINUTES MARCN I960 MATERIAL 10 1“ 102 MATERIAL WC3 -R 04 COMMERCIAL TIRE TREAD COMMERCIAL TIRE TREAD

LAB MEAN % HBL MEAN % REL VAR CODE F MINUTE DEV SDB MINUTE DEV EDI CODE INSTRUMENT. UNIT. OR OTFEF VARIATION

VO 061 4* 80 4 f 2 • «4 #40 2.9 .00 0 1 VO 064 3® 90 - 1 C. 3 U 11 3® 50 -ie .2 .55 0 1 voo*n 5* 00 «•* 1® 67 4® 55 6.4 1.57 01 V0074 4* 00 - 13® l ® 56 3® 8 0 - 11.2 , OC 0 1 VO 077 4* 00 -13® i If 11 3® 80 - 11,2 1 . 18 01

V00*>8 5o 50 19c 4 o 00 5© 15 20 a« oOC 0 1 VO 083 4 0 50 -2o3 3o67X 40 35 lo 7 2o 1 C 0 1 vooes 4 0 45 -3o 4 2o 04

X

3® 9 0 -s0 e o 5 C 0 1 V0090 4C 97 e 0 o lo 6 5 40 7 4 1 Co B o 69 01 VO 092 X 3o 95 - 140 2 2o 44 40 10 -4o 1 1,15 0 1 V0095 5- 05 90 7 lc 67 4o 90 Ho 6 o 5 5 0 1 V01 00 4C 65 lc 0 o 00 4o 2 5 •o 6 ose 0 1 V01 17 40 35 -5o 5 o 56 40 05 -!o3 3, OEX 0 1 VO 1 28 4 C 65 lo 0 o 00 4, 40 2o<5 o OC 0 1 VO 1 44 4o 51 - 2 o 1 o 17 40 01 -Co 1 o 85 0 1

VC 146 4r 55 - lo 2 lo 1 1 4© 4 0 2o9 2, 67X 0 1 VC 149 4 C 87 50 9 o 76 4© 35 1 0 7 ,55 01

V01 50 4 0 75 3 0 2 o 00 40 3 1 08 1 o 4 4 0 1 V01 52 4 0 80 4o2 o 56 40 50 5,2 lo 15 01

V 0 1 54 5C 15 1 lo 8 o 76 4® 9 2 l£o 1 o 5 € 0 1

VC 1 56 4o 90 60 4 c 28 4© 57 7,0 ,55 01

V01 58 4o 20 “Co« o 00 30 85 - 1 Co 0 o OC 70 DATA RECEIVED LATE

V01 61 4c 40 -4o 4 o 56 4© 2 0 - lo B 1,57 01

VO 1 66 4o 90 60 4 o 56 4© 6 0 7 o 5 lo 73 0 1 V01 69 4C 50 "2c 3 lo 52 40 10 -4, 1 3, 4EX 01

VO 1 78 4 0 65 loO lo 1 1 40 35 lo 7 lo 15 70 DATA RECEIVED LATE

VO 182 4 0 65 loO 2c 92X 40 4 0 2,9 o 5 C 0 1 V0206 4 0 45 -3o 4 lo 67 40 l 5 -3o 0 2o 1C 0 1 V02 07 40 50 -2c 3 2o 90X 4C 2 0 - lo 8 4, iex 0 1 VO 2 1 1 40 45 -30 4 lo 95 30 9 0 - 8,8 lo OC 01

VC 2 17 4 c C2 -1 2 0 6 2o4 2X 30 6 2 - 1 5o 3 4, 4 5X 0 1 VO 2 18 4 C 50 -2o3 lo 1 1 4© 4 0 2o 9 lo 57 0 1 VO 2 20 30 75 -ie 0 6 e c 04X 30 30 - 22 o 8 4, 02X 01

VO 221 40 45 -3o4 lo 47 4 0 20 - lo 8 lo 18 01

VO 238 5C 31 1 50 3 o 67 40 9 1 14, 8 2,7 ex 0 1

VO 243 4o 69 lo 9 20 14X 40 36 2 o 0 o 35 01 V0249 X 3C 75 -i e 0 6 o 0 0 30 75 - 1 2 0 3 2 0 eex ’0 DATA RECEIVED LATE

V0252 4o 6 2 o 4 o 67 40 21 - lo 5 ,43 01

4®60 • GR® MEAN • 4® 28 3 TEST DETERMINATIONS

*39 • SD MEANS • ®41 34 LABORATORIES IN GRAND MEANS

*05 • AVER SDR • ® 05 38 LABORATORIES REPORTING

MINUTE • UNIT MINUTE

22
MATERIAL

W03-W04

SCORCH TIME

MATERIAL W01-W02 4.60 MINUTE MATERIAL W03-W04 4.23 MINUTE

23
INTEBLABORATORY PROGRAM 0N EVALUATION 0F RUBBER FEP6*T 43 - 5 CURE TIME <50* MB) - MINUTES MABCH 1980 MATERIAL *01 -W 02 MATERIAL WC3-W04 COMMERCIAL USE TEE AD COMMERCIAL TIBE TREAD

LAB MEAN * BEL MEAN « BE1 VAfi CADE F MINUTE DEV SDB MINUTE DEV SDR CODE IN9TBUMENT, UNIT, 0B OTHER VARIATION

V0061 6,82 3,2 « 40 6,5 1 2,0 ,00 0 1 V 0 064 6,50 -1,7 1,01 6, 15 -3,7 .58 0 1 VO 07

1

6, 85 3,6 1,37 6,65 4® 2 1.0C 01

V 0 074 7,00 5,9 , 00 6,8 0 6, 5 ,0C 0 1 VO 077 5,70 -13,8 » 00 5,60 -12.3 1,58 0 1 V0078 X 7c 50 1 3o 4 ,00 7o 50 1 7o 5 ,00 98 EXTREME TEST RESULTS

VO 0 83 6, 55 -o9 3o 64X 60 50 1, 8 1,56 01 vooes 6C 37 -3 0 6 3, 40X 60 00 -6o 0 1 , 8 C 01 V0090 6C 85 3c 6 lo 78 6o 7 4 5,6 ,94 01 V0092 X 5o 75 -13c 0 lo 01 5,95 -60 8 1,15 0 1 V0C95 7c 20 e,9 1,01 70 05 1 Co 4 ,56 01

voi oo 6o50 — 1 o 7 , 50 60 35 -,5 ,56 0 1 V01 17 6, 15 -7c C 1, 01 So 8 0 -9, 1 1,73 01 V01 28 6o 55 •c 5 o 50 6o 4 0 ,3 c OC 01

VO 1 44 6c 33 -4o2 o 15 6, 00 -60 0 ,83 01

VO 146 60 50 -lo7 ,50 60 40 ,3 ,58 0 1 VC 1 49 6c 80 2o 8 lo 17 6o 4 0 ,3 ,58 01 VOI 50 6C 64 c 5 o 50 60 3 1 -lo 1 2 0 67X 01

VO 152 6c 75 2o 1 ,50 6, 50 io e 1, 15 01

VOI 54 7C 35 1 lo 2 c 92 60 95 e,9 ,79 01

VC 1 56 6c 87 4o 0 o 25 6,7 2 5, 4 , 29 01 VOI 58 5c ’5 -130 0 o 00 5,55 -13, 1 o OC *70 DATA RECEIVED LATE

VO 1 6 1 6C 15 -7c 0 1, 01 60 15 -3,7 ,58 01

VO 166 6,90 4 0 3 o 50 6o 7 0 5,0 1,15 0 1 VOI 69 6c 50 - Ic7 1, 37 60 25 -2, 1 1,56 01

VC 178 6c 70 lo 3 1,01 6o 50 i, e 1,73 70 DATA RECEIVED LATE

VOI 82 6o 82 3c 2 2o63X 6o 6 2 3 0 e , 5 C 0 1 V0206 60 35 -4o 0 2o 01 6o 10 -4,4 4, OSX 0 1 V020*7 6c 65 o 6 lo 37 6o 4 5 lo 0 1, OC r 1 V02 11 6c 27 - 5o 1 o 66 5,95 -to 8 1,0C 0 l

VO 217 5o 95 -10,0 lo 76 5,60 -12,3 1,53 01

VC 2 1

8

6c 50 -1,7 o 50 6o 4 0 ,3 ,00 0 1 VO 220 X 5c 70 -13,8 3, 63X 5, 10 -20, 1 3, 0 9X 98 EXTREME TEST RESULTS

VC 2 21 6c 50 -1,7 1,01 60 35 -, 5 1,73 01

VO 2 38 7 C 50 13, 4 1,69 70 12 1 1, 5 2, eox 01

VC 243 60 78 2, 5 2, 1

6

6,54 2o 5 , ee 0 1 V0249 5c 87 -1 lo 2 3o 77X 5o 5 0 -13,8 5o 77X 70 DATA RECEIVED LATE

VO 252 6o 4 1 -3,0 lo 39 6 0 19 -3o 1 o 5 C 0 1

6, 61 * OR,, MEAN • 6,38 3 TEST DETERMINATIONS

, 38 - SD MEANS - .37 3 2 LABORATORIES IN GRAND MEANS

, 06 • AVES 9DB -

• 05 38 LABORATORIES BEPOBTING

MINUTE » UNIT MINUTE

24
MATERIAL

H03-W04

CURE TIME (507. MH ) MATERIAL W01-W02 6-61 MINUTE MATERIAL W03-W04 6.38 MINUTE

25
REPORT 43-5

INTEBLAB0RATORY PROGRAM

CURE TIME (90S

ON EVALUATION 0F

MB) - MINUTES RUBBER

MARCH 1950 MATEEIAI R01-M02 COMMERCIAL TIRE TREAD

t AB MEAN 9 REL C6DE F MINUTE DEV SDR

V 0 06

1

10, PS 4,5 #25

VO 064 9, 50 -1,3 <3 88 VO 07 1 10,25 6.5 1, 20 VO 074 10, 50 9# 1 , 00 V0077 8,55 -11,1 ,76

V0078 X 1 loOO 14, 3 , 00 V0083 10c 00 3c 9 2, 74

X

vooes 9o 32 -3o 1 1, e3 V0090 10c IT 5, 8 2o 29 VO 0 ^2 * 8c 55 -1 lc 1 o 76 VCC95 X 10c 30 7, 1 o 88 V01 00 9o 7 5 lo 3 ,00

V01 17 9o 10 - So 4 o 00

V01 28 9o 50 — lo 3 o 25

V01 44 9c 31 - 3o 2 , 07

VO 1 46 9o 55 -o 7 1, 20 VC 1 49 9c 90 2,9 , 57 V01 50 10o 1

1

5, 1 ,97

VO 152 10 o 00 3o 9 , 25 V01 54 1 lc 22 1 6o 7 , 25

V01 56 10 c 30 7, 1 o 22 V01 58 * So 50 -1 1 0 7 o 25 VO 1 6 1 9o 35 CO 0

1 C\J o 76

VO 1 66 10o 10 5,0 o 25 VO 1 69 9 C 85 2,4 lo 01

VO 178 X 9,95 3o 4 o 5 1 voi e 2 9o 95 3, 4 lo 33

VO 2 06 9o 65 ,3 1, 4 1 VO 207 10, 15 5, 5 lo 4 1 V02 1 1 9,2T -3,6 lo 14 VO 2 1

7

8 C 77 -Go 8 2, 45X

V02 18 10, 00 3o 9 o 00 V0220 * 8c 80 -G, 5 2o 58X

VC 2 21 90 65 ,3 lo 83

V 0238 * 1 lo 25 1 6o 9 lo 18 V0243 10c 16 So 6 1,98

V6249 X V0249 80 25 -14c 3 lo 73

VO 2 52 9,50 - lo 3 o 63

9, 62 - GR, MEAN ,57 - SD MEANS

« 1 1 ° AVE 5 SDR MINUTE - UNIT O

MATERIAL RC3-H04 COMMERCIAL TIRE TREAD

MEAN * REI, VAR MINUTE DEV SDR CODE

10, 25 4,4 ,00 0 1 9,7 0 -1,2 1,20 01 10,55 7,5 , 9 C e i

1 0,70 9,0 ,cc 0 1 8,9 0 -9,3 1,64 01

1 2, 25 240 8 ,00 98

1 0 o 2 0 3o 9 2, 84X 0 1 90 35 -4o 8 lo 56 01

1 Oo 3 4 5© 3 ,92 0 1 9o 2 5 -So 8 1,59 01

1 lo 20 14c 1 o 8 2 0 1 9© 9 0 o 8 , 6 C 0 1 9o 20 -Co 3 1,04 01

10o 10 2,9 , OC 0 1 90 2 0 -6o 3 , 14 0 1

9C 90 o 8 1,39 01 lOoOO lo 9 ,30 01

10o 12 3o 1 o 9 G n i

1 0,2 0 3© 9 , 3 C Cl

1 lo 40 160 1 ,41 98

1 Oc 6 2 So 2 ,91 0 1 8o 34 - 1 5o 0 o OC 70

9© 50 -3o 2 lo C4 01

1 0o 3 0 4,9 , OC O 1 lOo 00 1,9 , 6 C 01

1 Oo 4 0 5, 9 , 6 C 70

1 0 o 22 4,2 , 3 C 01

9o 80 -o 2 lo G7 0 1 lOoOO 1,9 1, GO 01

90 50 -3,2 o 6 C 0 1 9o OO -8,3 1 o 3 C 01

10c 05 2,4 c 3C 0 1 80 55 - 1 2o 9 2, 3GX 01

9o 95 1 o 4 1,64 01

1 lo 50 17, 1 ,99 98

1 0o 54 7o4 ,59 0 1 70

8o 5 0 -13 0 4 1 o 5 C 01

9o 75 -,7 ,00 0 1

9,8 2 ,58

.10 MINUTE

INSTRUMENT, UNIT, 0R OTHER VARIATION

EXTREME TEST RESULTS

EXTREME TEST RESULTS

DATA RECEIVED LATE

DATA RECEIVED LATE

EXTREME TEST RESULTS

DATA RECEIVED LATE

3 TEST DETERMINATIONS

34 LABORATORIES IN GRAND MEANS

38 LABORATORIES REPORTING

26
MATERIAL

N03-N04

CURE TIME (907. MH )

MATERIAL W01-W02 9-62 MINUTE MATERIAL W03-W04 9-82 MINUTE

27
PEFOPT 43 5 INTERLAB0RATORY PROGRAM ON EV A LUATION OF RUBBER MINIMUM TORQUE - POUND -INCHES MARCH 1980 MATERIAL R01-WC2 MATERIAL W03-W04 COMMERCIAL TIRE TREAD COMMERCIAL TIRE TREAD

LAB MEAN MEAN * REL MEAN MEAN % REL VAR CODE F LB-INo N-M DEV SDR LB-INo N-M DEV SDR CODE INSTRUMENT, UNIT, OR OTHER VARIATION

vooei X 6.8C . 7682 35, 2 ,72 6* 65 .7514 32.3 ,00 98 EXTREME TEST RESULTS

V 0 064 5, 7 0 .6440 13,3 .62 5,75 ,6497 14,4 ,81 01 V0071 5, 1 0 . 5762 1.4 • 9e 5. 05 . 5706 ,5 1. 48 0 1 V00^4 X 6.6 0 .7457 3 1.2 1. 44 6,60 .7457 31,3 ,00 98 EXTREME TEST RESULTS

VO 077 « 5, 22 . 5904 3.9 4.32X 5. 65 . 6384 12,4 2, 43X 0 1 VCC78 X 6o 50 o 7344 2 9 0 3 ,00 60 50 o 7344 29,3 ,00 98 EXTREME TEST RESULTS

vooe3 4,95 o 5593 - 1 o 6 lo 79 40 85 o 5480 -3,5 lo 48 0 1 V0085 5o 3 1 o 6000 5o 6 o 0 0 50 31 o 6000 5,6 o 72 40 ORIGINAL IN NEWTON-METER

V0090 4o 62 c 5226 -e o 0 o 96 4, 75 ,5367 -5,5 o 76 0 1 V0C92 50 70 c 6440 1

3

0 3 o 98 5o 70 o 64 40 13,4 lo 21 0 1 VC095 50 10 o 576 2 1,4 o 9 8 5o 05 ,5706 o 5 o 40 0 1 V01 00 4, 5 0 o 5085 -1 0o 5 o 0 0 4o 50 ,5085 -10,5 ,00 0 1 V01 l"” 4^ 75 c 5367 -5o 5 o9e 40 85 o 5480 -3o 5 o 40 0 1 V01 28 5o 35 o 6045 6 0 4 o 36 5o 60 o 6327 1 1 o 4 ,00 0 1 VO 1 44 40 35 o 4915 -13c 5 o 72 4o 60 o 5 1 98 -8o 5 o 81 01

VC 1 46 5o 4 0 c 6 1 0 1 7,4 4o 40X 5o 00 o 5649 -o5 3o 64 X 0 1 VC 1 49 4o95 c 5593 - Ic6 o 49 4o 92 ,5565 -2o 0 o 40 0 1 VO 150 40 65 o 5254 -7c 5 i o 08 4, 50 o 5085 -10o5 ,00 0 1 VC 152 4,45 c 5028 -1 lo 5 o 36 4o 55 o 5 1 4

1

-90 5 1, 11 0 1 Vr l 54 5c 20 c 5e?5 30 4 ,00 5o 20 o 5875 30 4 0 a © 01

VC 1 56 a 50 40 c 6 10 1 7c 4 2o 27 4o 80 ,5424 — 40 5 o 00 01

VC 158 4,95 o 5592 - 1 o 6 o 00 5o 0® o 5649 -o5 o 40 70 DATA RECEIVED LATE

VC 161 4c 4 5 o 5028 -1 lo 5 o 72 4o 55 o 5 1 4 1 -9, 5 2o 53X 0 1 V* 166 5c 15 c sei 9 2 0 4 o 36 5o 15 ,5819 2o 4 o 40 0 1 VO 1 69 5c 22 c 5900 3 0 6 o 87 5o 3 1 o 6000 5o 6 1,79 40 ORIGINAL IN NEWTON-METER

VC 178 5c 35 o 6045 6,4 o 95 5o 4© o 6 1 0 1 7,4 c 40 70 DATA RECEIVED LATE

voie 2 5C 0 0 o 56 5 0 -o 6 lo65 5o 00 o 5650 -o 5 1,31 40 ORIGINAL IN NEWT0N-ME7ER

V0 2 0 6 5c 15 c 5819 2o4 lo 08 5o 25 o 5932 4,4 lo 88 0 1 V020’T 5 0 00 o 5649 -o 6 o72 40 95 o 5593 -1,5 o 40 01 V02 11 50 55 o 6271 10,4 2o 0 1 5o 40 o 6 1 0 1 7,4 lo 21 0 1

VC 2 l"7 X 6c 65 o 7740 36o 2 3o 56X 9o 60 lo 08 47 91,0 ISoOOX 0 1 V02 18 4c 9 0 o 5537 -2o 6 ,00 5o 00 o 5649 -c5 ,81 0 1 V0220 5o 45 c 6158 8 0 4 2o 15 5o 20 o 5875 3,4 2, 16 0 1 V0221 50 0 0 o 5650 -c6 o 87 4,91 o 5550 -2o 3 ,72 40 ORIGINAL IN NEWTON-METER

VC 238 4c 31 o 4e76 - 1 4o 2 o 93 4, 53 o 5 1 24 -9o e o 93 0 1

VC 243 5c 20 o 5875 3o 4 o 36 50 15 o 50 19 2,4 o 00 01 VO 249 X 6o 00 c6779 1 9o 3 3o 59X 6o 50 o7344 29, 3 4, 05X 70 DATA RECEIVED LATE

VO 2 52 4 C ec o 54 2 4 -4 0 6 o 72 4o 80 o 54 24 -4,5 , 81 0 1

5*0 3 • 56e2 - GR, MEAN • 5,03 .5680 3 TEST DETERMINATIONS

#38 * 0431 * £D MEANS ” .36 • 04C4 31 LABORATORIES IN GRAND MEANS

.08 . 0091 - AVER SDR * .07 e 0081 38 LABORATORIES REPORTING

LB-INc N-M - UNIT LB-INo N-M

28
MATERIAL

H03-W04

MINIMUM T0RQUE

MATERIAL W01-W02 5-03 LB-IN. MATERIAL W03-W04 5.03 LB-IN.

29
REPeRT 43-5

INTERLABORATORY PROGRAM ON EVAIDATI0N 0F RUBEEF MAXIMUM TORQUE - POUNE-INCBES MARCH 1980 MATEFIAI W01-W02 MATERIAL W03-W04 COMMERCIAL USE TREAD COMMERCIAL TIRE TREAD IAB MEAN MEAN * REL MEAN MEAN REL VAR CODE F IB- INc N-M DEV SDR LB-XNo N-M DEV SDR CADE INSTRUMENT , UNIT, OR OTHER VARI ATTGN

V0061 * 25, 70 2,803e 8, 8 ,57 25, 10 2,8360 1C,

5

,00 0 1 VO 064 23,80 2,6892 .7 , 86 23, 00 2,59ee 1*2 1, 56 0 1 V0071 23, 75 2, 6835 ,5 1,53 22,60 2,5536 -»5 ,62 01 V0074 25,40 2, 8699 7,5 ,86 24,60 2,7796 8, 3 ,00 0 1 VO 077 23, 05 2, 6044 -2,4 2, 58X 22,70 2, 5649 -, 1 1.91 0 1 V0C78 260 50 2 0 994 2 12, 2 ,00 25,00 2o 6 2 4 8 10, 1 ,00 01

VO 0 83 240 80 2o e022 5, 0 1 o77 230 65 2, 6722 4, 1 £,99X 01 vooes 2 3o 5 4 2o 66 0 1 -o 3 o 33 22o 70 2o 56 5 1 -o 1 o 55 40 ORIGINAL IN NEWTON-METER

VC090 22o 42 2o 533 8 -5o 1 2o 49X 2 lo 55 2o 4349 -5o 1 ,47 01 V0P92 25, SC 2,9151 9,2 2o 85X 24, 15 2o 7287 6o 3 1,08 0 1 V0095 2 lo 50 2, 4293 -9, C 1 o 5 1 21 o 30 2o 4067 -6,2 lo 56 01

VO 100 240 40 2o 7570 30 3 ,00 23, 30 2,6327 2,6 o 54 0 1 V01 17 2 lo 6 0 20 4406 - 8o 6 ,59 21o 05 2o 3784 -7o 3 ,31 0 1 VO 1 28 22, 45 2o 5366 -So 0 ,94 22o 20 2o 50e4 -2o 3 oOQ 0 1 VO 144 22o 30 2o 5197 -5, 6 ,80 2 1 o 6>0 2, 4406 -4,9 lo 17 01

VO 1 46 23o OC 2o 59 8 8 - 2o 6 o 6 5 2 lo 60 2o 4406 -4o 9 2o 79X 0 1 VC 149 22, 27 2, 5169 -5,7 o 39 21,62 2, 4434 -4, 8 o 43 0 1 VC 150 22, 25 2, 6270 - lo6 ,78 22, 2© 2o 50 84 -2,3 lo 43 0 1 VC 152 2 2o 4C 2o 5310 -5, 2 ,43 2 1 o 65 2o 446 2 -4,7 o 62 01

VO 154 2 2o 60 2o 666 6 —c 1 ,79 22o 60 2© 5536 -o 5 lo 25 01

VC 156 23o 8C 2o 6 8 9 £ ,7 lo 79 220 2C 2o 5 0 e4 -2o 3 lo 56 0 1 VC 158 23o 00 2o 59 8 8 -2o6 ,22 22o 35 2 0 5253 - lo 6 ,31 70 DATA RECEIVED LATE

VC 161 21, 70 20 45 1 9 -8o 1 1,00 20 o 80 2o 350 2 -8,4 o 62 01

VO 166 22o 85 2,5818 -3, 3 ,79 22o 00 2,4858 -3, 2 o 31 0 1 VC 169 24, 82 20 80 5 1 5o 1 o 38 23o 90 2 o 7001 5o 2 1, 38 40 ORIGINAL IN NEWT0N-METEF

VC 178 240 00 2, 7i i e lo 6 ,00 23o 35 2o 63 83 2, 8 o 3

1

70 DATA RECEIVED LATE

voie2 22,79 2, 5751 -3o 5 lo 7 0 2 lo 95 2o 4 8 0 1 -30 4 ,83 40 ORIGINAL IN NEWTON -METER

VO 206 24, 15 2o 72e7 2o 2 1,23 230 15 2o 6 1 57 1 o 9 lo 9

1

0 1 VO 2 07 240 45 2o 7626 3, 5 1,98 23,95 2o 706

1

5,4 lo 65 01 V02 1 1 24, 85 2o 807e 5,2 lo 64 23o 60 2o 6666 3o 9 ,62 'o 1

VC 2 17 X 2 5o 7C 20 9038 8o 8 ,94 27o 75 3o 1355 22, 2 13o 31 X 0 1 V0218 22, 05 2, 6 0 4 4 -2,4 o 00 22o 45 2o 5366 -1,2 o 62 0 1 V0220 24,75 2c 796 5 4, 8 6 0 42X 23o 70 2o 6779 4 0 3 lo 25 01 V0221 24o 12 2o 7 2 £ 1 2, 1 o 57 23o 10 2o 6 1 0 1 1,7 lo 58 40 ORIGINAL IN NEWTON-METER

VC 2 38 22, 62 2o 5564 -4c 2 ,47 21 o 75 2o4575 —4, 3 o 68 01

VC 243 240 20 2o 7344 2,4 1,15 23o 20 20 62 1

4

2, 1 1, 14 01 V0249 25o00 2, 8247 5, 8 2o 94X 24, 25 2o 7400 6o 7 4, 69X 70 DATA RECEIVED LATE

V0252 23,50 2o 6553 -o 5 1,51 22o 45 2o 5366 -1,2 ,31 0 1

2 3, 62 2,6692 - GF, MEAN * 2 2,72 2, 566 8 3 TEST DETERMINATIONS

1,26 ,1418 - EC MEANS - 1, 11 , 1254 34 LABORATORIES IN GRAND MEANS

, 13 ,0151 AVER SDE * ,09 • 01 04 38 LABORATORIES REPORTING

I B-IN, N-M * tNIT LB-IN, N-M

30
MATERIAL

N03-N04

MAXIMUM T0RQUE

MATERIAL W01-W02 23.62 LB-IN. MATERIAL W03-W04 22.72 LB-IN.

31
N8S-1 14A (REV. 9-78)

U.S. DEPT. OF COMM. IfoJ 3. fteicijjien? $

BIBLIOGRAPHIC DATA

SHEET

1. PUBLICATION OR REPORT NO. RUBBER GRP 43

4. TITLE AND SUBTITLE

INTERLABORATORY PROGRAMS FOR RUBBER

Analyses No. 43

January - March 1980

5. Publication Date May 14, 1980

i| PtffewwRg Ofg«ni7jtliin Cftfcl

7. AUTHOR(S)

T.L. Cummings, J. Horlick, G.W. Bullman

8. Performing Organ. Report No. NBSIR 80-1835

9. PERFORMING ORGANIZATION NAME AND ADDRESS

NATIONAL BUREAU OF STANDARDS

DEPARTMENT OF COMMERCE

WASHINGTON, DC 20234

je<a/Task/Work that N&

11. Contract/Grant No.

12. SPONSORING ORGANIZATION NAME AND COMPLETE ADDRESS (Street. City, state, ZIP)

Collaborative Testing Services, Inc.

8343A Greensboro Drive, McLean, VA 22102

13. Type of Report & Period Covered FINAL

i

' < r m i. iiii ..Mm Him iYi i .. V.. lii

15. SUPPLEMENTARY NOTES

| | Document describes a computer program; SF-185, FIPS Software Summary, is attached.

16. ABSTRACT (A 200-word or leas factual summary of moat significant information. If document includes a significant bibliography or

literature survey, mention it here.)

Collaborative Reference Programs provide participating laboratories with the

means for checking periodically the level and uniformity of their testing

in comparison with that of other participating laboratories. An important

by-product of the programs is the provision of realistic pictures of the state

of testing art. This is one of the periodic reports showing averages

for each participant, within and between laboratory variability, and other

information for participants and standards committees.

17. KEY WORDS (s ix to twelve entries ; alphabetical order; capitalize only the first letter of the first key word unless a proper name;

separated by semicolons

)

Collaborative reference program; Laboratory evaluation » Precision;

Reference samples; Rubber; Testing calibration

18. AVAILABILITY Unlimited

CXI For Official Distribution. Do Not Release to NTIS

I | Order From Sup. of Doc., U.S. Government Printing Office, Washington, DC

20402, SD Stock No. SN003-003-

I | Order From National Technical Information Service (NTIS), Springfield, VA. 22161

19. SECURITY CLASS

(THIS REPORT)

UNCLASSIFIED

20. SECURITY CLASS

(THIS PAGE)

UNCLASSIFIED

21. NO. OF

PRINTED PAGES

27

22. Price

USCOMM-DC

J\