Source: https://www.scribd.com/doc/102155983/IS-4454-2
Timestamp: 2018-05-26 12:44:57
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Matched Legal Cases: ['art 2', 'art 3', 'ART 2', 'art 3', 'art 1', 'art 4', 'art 1', 'art 3', 'art 2', 'art 3', 'art 2', 'art5', 'art 5', 'art 5', 'art 2', 'ART 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2', 'art 2']

IS:4454_2 | Wire | Steel
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IS 4454 ( Part 2 ) :2001 [ Superseding IS 4454 ( Part 3) : 1975
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Indian Standard STEEL WIRE FOR MECHANICAL SPRINGS — SPECIFICATION
PART 2 OIL HARDENED AND TEMPERED STEEL WIRE
ICS 21.160; 77.140.25
after the draft finalized by the Wrought Steel Products Sectional Committee had been approved by the Metallurgical Engineering Division Council. IS 4454 ( Part 3 ) : 1975 shall stand superseded. the Committee decided to revise it to br]ng it in line with the present practices being followed by the Indian industry.wd )’.. Other parts in the series arc : Part 1 Cold drawn unalloyed steel wire Part 4 Stainless steel wire Examples of application for oil hardened and tempered steel wire ha~c been given in Annex B in the preparation of this standard. shall be rounded off in accordance \vlth 1S 2: 1960 ‘Rules for rounding off numerical vallles ( revi. Wllilcre\ic\vil~gt l~estillldtirdill [he light of experience gained during these years. [t is for these reasons that a very large variety of steels may be employed in the manufacture of steel springs. In order to facilitate clear survey.Wrought Steel Products Sectional Cornmittec. the steels are classified into three categories. This part is one of the series of Indian Standards on steel wire for mechanical springs. This variety is further increased owing 10 the fact that in certain cases these springs have to exhibit considerable resistance against corrosive influences and withstand elevated temperature and that the mechanical stress is imposed on them vav considerably. necessary assistance has been derived from: a) lSO/CD 8458-1 : 1998 ‘Steel wire for mechanical springs — Part 1 : General requirements’ lSO/CD 8458-3 : 1998 ‘Steel wire for mechanical springs — Part 3: Oil hardened and tempered steel wire” prEN 10270-2 : 1996 ‘Steel wire for mechanical springs — Part 2: Oil hardened and tempered spring steel wire of unalloyed steels” b) c) For [hc purpose of deciding whether a particular requirement of this standard is complied with. b) c) Chemical composition and tensile strength values have been modified Dimensional tolerances ha~’ebeen modified Requirements of wrapping test. 10 this re~ision fol[o~~ing changes ha~e been made: a) I Requirements of IS 4454 ( Part 3 ) : 1975 ‘Oil hardened and tempered steel wires-alloyed’ have been rnergcd in line with other overseas standards. This standard wasfirs tpnblishe din1967 andsubsequently revisedin 1975. MTD 4 FOREWORD This Indian Standard ( Part 2 ) ( Second Revision ) was adopted by the Bureau of Indian Standards. Grade designation has been modified. The number of significant places retained in thc rounded off la 1uc should be the same as that of the specified value in this standard. expressing the result of a test or analysis. . An informative Annex A has been given for the benefit of purchaser giving particulars to be specified by the purchaser while placing order for the spring wires covered in this standard. . obscncd or calculated. The properties governing the application of steels for springs maybe considerably influenced by their chemical composition as well as the modes of mechanical treatment and heat treatment applied. torsion test and decarburization test have been modified d) e) Subsequent to publication of this standard. the final taluc.
2 REFERENCES The following Indian Standards contain provisions. which through reference in this text. 2 The terms spool. 3. NOTE — A ring of wire does not imply any specific length of wire or diameter of wire. NOTES 1 Well-castwire willlieflaton itselfin uniformcircles. Spiral cast denotes the tendency of the rings out from the coil in spirals. constitute provisions of this standard. quenched in oil or other suitable medium and then tempered at an appropriate temperature. 3.1 For the purpose of this standard. one complete circle of wire. the definitions .5 Dynamic Duty 1956 GlossaIYof terms relating to iron and (Part5 ): 1976 steel: Part 5 Bright steel bar and steel wire (first revision ) 4163:1982 Method for determination of inclusion content in steel by microscopic method (Jkst revision) Methods for random sampling Method of measuring decarburized depth of steel (jhxt revision ) General technical delivery requirements for steel and steel products Qualifies applications where springs are subjected to frequent or predominantly dynamic loading and where small coiling ratios or severebending radius is required. Helix. 3. for the manufacture of mechanical springs for static duty and dynamic duty applications. that is. or a combination of both. 4905:1968 6396:1983 8910:1978 4 SUPPLY OF MATERIAL General requirements relating to the supply of material shall be as laid downinIS8910. All standards are subject to revision. At the time of publication. Pitch The way in which a single ring of wire behaves when cut from coil. 3.2 Cast. spool-less core and cheese are synonymous with coil. NOTE — This does not apply to situations of low frequency high stresses. 5 GRADES The grade of spring wire used depends on the stress 1 3 TERMINOLOGY 3.4 Static Duty Qualifies applications where springs me subjected to static stresses or infrequent dynamic loading.3 Oil-Hardened and Tempered Wire Wires that are heat treated in the following way: they are first transformed into austenite. Method for chemical analysis of steel Mechanical testing of metals — Tensile testing (second revision ) Method for simple torsion test for wire ( second revision ) Method for wrapping test for metallic wire (@t revision ) 3. and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: 1S No. 228 (in Parts ) 1608:1995 1717:1985 1755:1983 Title given in IS 1956 (Part 5 ) and the following shall apply. Straight cast wire runs out approximately straight when unwound from the coil.6 Ring One turn of wire from a coil.IS 4454( Part 2 ): 2001 Indian Standard STEEL WIRE FOR MECHANICAL SPRINGS — SPECIFICATION PART 2 OIL HARDENED AND TEMPERED STEEL WIRE (Second Revision ) 1 SCOPE This standard ( Part 2 ) covers requirements for oil hardened and tempered carbon and low alloy steel wire. the editions indicated were valid.
12 0.53-0. 7 CHEIWICALCOMPOSITION 7.62-0.20 0.60 0.90 0.20 0.35 0.60 0.75 (3) (4) 0.50-17.20 0.025 0.20 0.90 0.10 0.60 0.60 0.50-10.025 0. the referee method shall be as agreed to between the purchaser and the manufacturer.50-10.s0 0.025 0.025 — — — 0.90 0.025 0. 7.60 1. the procedure given in the relevant part of IS 228 shall be the referee method.62-0.030 0.025 0.20 0.50-0.50-0.025 0.1 The processes used in making the steel and in manufacturing oil-hardened and tempered spring steel wire are left to the discretion of the manufacturer.025 0.35 0.12 0.030 0.50-0.00 0. Percent Mn (1) FDC TDC (2) 0.72 0.1 Ladle analysis of the material when carried out either by the method specified in the relevant part of IS 228 or any other established instrumental/chemical methc@ shall be as given in Table 2.2 ) Grade Constituent.20 0.55 0.25 0. The allowable level of inclusions shall be agreed between the manufacturer and the purchaser.60-1.025 0.50-0.10-0.25 . 6.72 0.2 Product Analysis Permissible variations in case of product analysis from the limits speciiled in Table 2 shall be as given in Table 3.12 0.50-0. The steel shall be fully killed.55 0.10-0.25 0.30 0.80 2 .030 0. 6 ~ACI’URE 6.80-1.50-0.10 0.10-0.The wire diameterrangea and tensile strength grades normally available for static duty and dynamic duty are given in Table 1.030 0.90 0.10-0.20-1. The customer should be informed of the manufacturing process.1 and7.030 0.12 0. Table 1 Wire Grades and Diameter Range ( Clause 5 ) Tensile Strength (1) Low tensile strength Medium tensile strength High tensile strength Diameter range.60 0.60-0.90 0.47-0.15-0.60-1.IS 4454( Part 2 ): 2001 level and on the nature of duty.10-0.10-0.25 0.20-1.47-0.10-0.50-1.72 0.50-1.2 The VD grades shall be checked for maximum size of inclusion in accordance with IS 4163.20-1.10-0.025 0.40 0.20 0.47-0.60 0.50-0.50-0.25 0.20 s Max (5) P Max (6) Cr (7) v (8) — Cu Max (9) VDc FDCrV-A TDCrV-A VDCrV-A FDCrV-B TDCrV-B VDCrV-B FDSiCr TDSiCr VDSiCr 0.90 0.025 0.12 0.53-0.40 0. mm Static (2) Medium (3) Fatigue High Fatigue (4) FDC FDCrV(~B) FDSiCr TDC TDCrV(~B) TDSiCr VDc VDCrV(~B) VDSiCr 0. In case of dispute.60-1.030 0. However.80-1.60 — — 0. 6.10-0.025 0.30 0.025 0.025 0.50-0.40-0.25 0.10-0. The secondary steel making process adopted shall be mutually agreed to between the manufacturer and the purchaser.3 The wire shall be oil-hardened and tempered after cold working.12 0.10-0. where the method is not given in IS 228 or its relevant parts. — — 0.35 0.030 0.10 0.80-1.10-0.62-0. if he so desires.40-0.15-0.30 1.50-0.030 0.20 0.00 0.88 0.00 0.55 0.15-0.50-0.50-0.40-0.12 0.12 0.025 0.88 0.025 0.50-1.80 0.00 Table 2 Chemical Composition ( Clauses 7.40 0.60 1.
003 0.1 Tolerance on diameter of wire shall be as specitied in Table 4.1 Tensile Test The tensile test shall be carried out in accordance with IS 1608.008 0.030 0.005 0.010 0.80 1.45 7.090 0.05 0.65 0.1. 10.01 NOTES 0.78 2.050 0.05 0.020 0.78 0.050 0. mm Tolerance (+).010 0.00 5. 3 .2 The differenm between the maximum and minimum diameter of the wire at the same cross-section shall not be more than 50 percent of the total permissible Table 4 Diameter Tolerance for Coiled Wire ( Clauses 9.035 0. 60 MPa for TD and 70 MPa for the grades FD. L 1 The range of tensile strength values within a coil shall not exceed 50 MPa for the grades VII.035 0.10 9.012 0.040 0. mm Class A Over (1) Up to and Including (2) Class B Over Up to and Including (2) Class A Class B (3) (4) (1) (3) (4) — 0.045 0. and other harmful defeets. tears. 9 IMMENS1ONS AND TOLERANCES 9. mm Tolerance (+). The tensile strength and reduction in area of the wire shall be as given in Tables 5 and 6 and shall be calculated using the actual wire diameter.100 0.100 1 Class A tolerance is intended for wire grades TD and VD. Max (1) Carbon Silicon Manganese Sulphur Phosphorus Copper Chromium Vanadium (2) All SiCr Other grades All All All AH All All (3) 0.10 14. 10 MECHANICAL PROPERTIES 10. pits.00 11.080 0.09 0.05 0.01 1.006 0.004 0. die-marks.2) Constituent Wire Grade Permissible Variations Over and Under the Specified Limit.qos 0. Class B tolerance is intended for wire grade FD.17 0.26 0.3 Sizes and tolerance other than those specified in Table 4 may be mutually agreed to between the purchaser and the manufacturer.78 4. scratches. Class A tolerance is intended for wire grades TD and VI).015 0.65 0.50 18. seams.00 11.2 and9.37 0.00 0. which have a noticeable adverse effect on the application of the wire.78 4.070 0.025 1. on visual examination.9.80 1.03 0.26 0.10 14.45 7.080 0. 9.02 0.02 8 FREEDOM FROM DEFECTS The surface of the wire shall be smooth and as free as possible from defects.09 0.030 0.003 0.50 18.045 10.040 0.00 5. deviation specified in Table 4.05 0. rus~ scale. Percent.30 20. such as grooves.090 0.00 2.03 0. 9.30 10.IS 4454( Part 2 ): 2001 Table 3 Permissible Variations for Product Anatysis ( Clause 7.37 0.020 — — — — 0.00 0.015 0.070 0.3 ) Nominal Diameter of Wire.10 9.025 0. 2 Class B tolerance is intended for wire grade FD.17 0.04 O. mm Nominal Diameter of Wire.005 0.030 0.
-— MPa FDC Over (1) — Up to and Including (2) 0.00 mm.50 0.60 6.00 mm.20 3.80 1.50 4.50 7.00 8.50 4.70 3. — Min (3) 1 800-2 100 1 800-2100 1 800-2060 1 800-2010 1 750-1950 1 740-1 890 1720-1 890 (4) 1 800-2 100 1 800-2 100 1 780-2080 1 750-2010 1 750-1 990 1 710-1950 1 710-1 890 1670-1 1660-1 1630-1 830 820 780 (5) 1900-2200 1 900-2200 1 860-2 160 1 850-2100 1 840-2070 1 820-2030 1790-1 970 (6) 2000-2250 2000-2250 2000-2250 2000-2250 2000-2250 2000-2250 2000-2250 1970-2 140 — — 45 45 45 45 45 45 45 40 40 40 40 40 40 40 35 35 35 35 35 30 30 30 30 (7) 0.00 3.00 8.60 6.IS 4454( Part 2 ) :2001 Table 5 Mechanical Properties for Oil Hardened and Tempered Steel Wire for Static Duty ( Clause 10.00 8.50 2.70 3.60 2.50 7. 6 Dispersion of tensile strength of one wire shall fall within half of the range of tensile strength in the table 4 .00 14.00 4.00 6.00 4. Tensile Strength for Grades.00 3. 3 For grade FDCrV-A: For diameter <3.00 5.00 FDCrV-A FDCrV-B FDSiCr Keduction in Area Percent. For diameter S2 .60 2.00 5. a lower value of 2060 MPa may be agreed.00 12. a lower value of 1900 MPa may be agreed.20 4.50 4.00 mm.50 2.00 12.00 8.50 10.30 1. 4 For grade FDCrV-B: For diameter <1.20 3.00 15.00 NOTES 1 1 670-1 820 1 640-1 790 1 620-1 770 1 600-1 750 1 580-1730 1 550-1700 1 540-1690 1 520-1 670 I 510-1 660 1 500-1 650 1 470-1 620 1460-1 1440-1 1430-1 1400-1 1380-1 610 590 580 550 530 1 750-1 900 1720-1 870 1950-2120 1930-2100 1910-2080 1 900-2060 1 870-2030 1 860-2020 1 850-2000 1 840-1 990 1 830-1 980 1 800-1 950 1780-1 1760-1 930 910 I 700-1 850 1680-1 830 1 610-1 760 1 600-1750 1 560-1 710 1 540-1690 1 520-1 670 1 510-1660 1 500-1 650 1460-1 1440-1 1420-1 1400-1 610 590 570 550 1 660-1 810 1 620-1 770 1610-1760 1 590-1 740 1 580-1 730 1 560-1 710 1 540-1 690 1 520-1 670 1 510-1 660 1 500-1 650 1480-1630 1470-1620 1450-1600 1430-1 1420-1 1410-1 1400-1 580 570 560 550 1 740-1 890 1 710-1 860 1700-1 850 1380-1530 1370-1520 1350-1 500 1 360-1 510 1 320-1470 1 280-1430 1 270-1420 1250-1400 1 660-1 810 1620-1770 1 580-1 730 1470-1 720 1320-1470 1300-1450 1290-1440 1270-1420 1 550-1 700 1 MPa = 1 N/mm2= 1 MN/m2 0.50 4.30 1. a lower value of 2000 MPa may be agreed.70 5.00 mm.20 4. 5 For grade FDSiCr: For diameter s2. a tensile strength range of 1 720-1 920 MPa may be agreed.00 15.00 1.80 1.50 0.40 1.50 10.00 6. a tensile strength range of 1 720-1 92~ MPa may be agreed.00 2.00 2.1020 kgt7mm2 = 2 For grade FDC: For diameter s 1.00 mm.40 1.70 5. a tensile strength range of 1 620-1 820 MPa may be agreed.00 mm.1) Wire Diameter mm (Nominal).00 17.00 14. . For diameter <3.00 1.
00 3. MPa Reduction in Area Percent. Tensile Strength for Grades.00 5.60 2.00 6. 2 Dispersion of tensile strength of one wire shall fall within half of the range of tensile strength in the table.00 mm.07 mm.50 4.3.60 2. Wrapping test shall be carriedout in accordance with IS 1755.00 6. 10.00 2.60 6. the torsion test piece shall be twisted in one direction until fracture. 10.50 0.50 4.00 4.50 2.80 1. the test piece is first twisted in one direction — the number of twists indicated in Table 7 and is then twisted in the other direction until fixture.00 9.70 mm up to and including 6.00 0.50 7. 10.1) Wire Diameter mm (Nominal).00 3. The fractoreplane shall be perpendicular 5 .IS 4454( Part 2 ): 2001 Table 6 Mechanical Properties for Oil Hardened and Tempered Steel Wire for Dynamic Duty ( Clause 10.00 8. For grade FD wire.00 9.20 3.20 4.3 Torsion Test 10.00 1.70 3.60 6.3 No harmfi.00 8.00 NOTES 1700-1850 1700-1850 1 700-1 850 1720-1 800 1 670-1750 1 640-1750 1620-1750 1600-1720 1 580-1700 1 550-1650 1 540-1 650 1 520-1650 1 510-1640 1 500-1 640 1470-1620 1460-1620 1440-1 1430-1 1400-1 570 570 520 1620-1770 1 620-1770 1620-1770 1 570-1 720 1 570-1720 1 520-1 670 1 520-1670 1 520-1 670 1470-1620 1470-1620 1470-1620 1470-1620 1420-1 1420-1 570 570 1 660-1 810 1 660-1 810 1620-1770 1 620-1770 1 570-1720 1 520-1 670 1 520-1 670 1 520-1 670 1 520-1670 1470-1620 1470-1620 1420-1 1420-1 570 570 40 40 40 40 40 35 35 1 710-1 860 1710-1 1660-1 1660-1 860 810 810 1 370-1 520 1370-1 1370-1 520 520 1 370-1 520 1 340-1490 1 340-1490 1 380-1490 1360-1490 1 620-1770 1620-1 770 1 1 MPa = 1 N/mmz = 1 MN/mz = 0. Other gauge lengths may also be used subjeet to mutual agreement between the manufacturer and the purchaser.40 1.20 3.50 0. (d= nominal diameter ofthe whe).00 4.50 7.50 2. The wire shall not show any sign of fracture when closely coiled for four turns around a mandrel of diameter equal to that of the wire.1020 kgflmm’.2 The torsion test shall be carried out in accordance with IS 1717.00 1.30 1. For wire grades TD and VD.00 5.3. 10.3. Over (1) — Up to and Including (2) TDC VDc (3) 1700-2000 1700-2000 1700-1 950 TDCrV-A VDCrV-A (4) 1750-1950 1750-1950 1750-1950 1700-1900 1670-1 1670-1 1620-1 860 860 800 TDCrV-B VDCrV-B (5) 1910-2060 1910-2060 1910-2060 1 860-2010 1 820-1970 1 820-1 970 1770-1 1720-1 920 860 TDSiCr VDSiCr (6) 2030-2230 2030-2230 2030-2230 2030-2230 2030-2230 2030-2210 2000-2160 1900-2060 1 860-2010 1 860-2010 1 860-2010 1 860-2010 1 810-1960 1 810-1 960 1 810-1 960 1 760-1 910 1760-1 1750-1 910 910 Min (7) — — — 45 45 45 45 45 45 45 45 45 45 45 45 45 45 0.50 4.00 10.70 5.2 Wrapping Test Wrappingtest shall be applied to wires with nominal diameter less than 0.70 5.00 2.40 1.50 4.d defects shall be present on surface after fracture. The gauge length is equivalent to 100 x d .30 1.80 1.20 4.70 3.1 The torsion test shall be applied to wires with nominal diameter from 0.
6 Cast of the Wire The wire shall be uniformly cast.50 6 6 6 4 6 6 4 4 3 3 5. 1 CAST OFTHEWIRE 6 .70 nunwithmutoalagmemertt between the manufacturer and the purchaser. d= FIG.IS 4454 (Part 2) :2001 Table 7 Torsion Test ‘Requirements ( Clause 10. three to three and half times the nominal diameter. the cast requirements may be considered as being fulfilled if the following condition is satisfied: An individual ring taken from the coil or bobbin and freely hung on a hook may show an axial displacement ‘j’ at the ends of the ring ( see Fig.00 3.50 4. The closed coil is then stretched so that after releasing the stress.00 to wire axis and shows no visible cracks.60 6. When a ring of wire is cut from the package and allowed to Ml on the surfhce. VDC Over (1) 0.00 mm diameter.50 3.60 . 10. the wire shall lie flat and not show a spiral cast. The wires shall not show any sign of fracture when bent through an angle of 90° around a mandrel of diameter equal to twice the wire diameter. 10. 10.5 Coiling and Stretching Test The coiling test may be applied to wires with nominal diameternot greater thanO. for sizes up to 5 mm.50 5.50 4.50 3. and nominal diameter of the wire in mm.00 1.60 2. it sets to approximately the times its original length.6.60 2. 1 ).3.00 3. The surface condition of the wire and the regularity of the spring pitch (and individual windings) shall be inspected with the test piece in this condition.2) Nominal Diameter of Wire. Right (3) Left (4) TDCrY VDCrV r Right (5) Left (6) TDSiCr. mm Minimum Number of ‘lkists for Grades TDC.1 By mutual agreement between the manut%turer and the purchaser.69 Up to and Including (2) 1. VDSiCr Right (7) Left (8) 6 6 6 6 6 6 24 16 14 12 10 8 6 6 6 6 6 6 12 8 4 4 4 4 6 5 4 4 4 4 0 0 0 0 0 0 0 0 1. This displacement ‘f shall not exceed a value given by the following inequality: where D= mean diameter of the individual ring measured when lying horizontal in mm.4 Bend Test The bend test shall be applied to wires with nominal diameter greater than 6.00 1. 10. A test piece approximately 500 nun in length is closelywound under slight but reasonably uniform tension on a mandrel.
00 mm. The method of testing and the evaluation of test results are to be agreed upon between the purchaser and the manufacturer. Table 9 Permissible Depth of Surface Decarburization ( Clause 10.50 mm to 8. 10. or on spools. ’) d TD (4) 0.9.2 It is necessa~ to heat the test pieces to a temperature of about 5000C for the purpose of stress relief before carrying out this test.04 1.50 2.00 VD (3) 0.1 The test pieces shall be immersed in a solution of 50 percent of concentrated hydrochloric acid and 50 percent of water at a temperature in the range of 70-800C for a period of time equivalent to 2s for every 0. 13 CONDITION OF DELIVERY 13.025 mm of diameter. 10.00 Up to and Including (2) 4.00 6. Unless specified otherwise.7. 10. The permissible depth of surface defects after the test shall be in accordance with Table 8.7 Deep Etch Test Deep etch test shall normally be limited to wire of 1. If the testis required by the purchaser on smaller sizes of wire. if mutually agreed between the manufacturer and the purchaser. 11SURFACE FINISH The spring wire shall be protected against corrosion and mechanical damage.9.7.1 The cross-section of wire of VD and TD grades shall be free from complete decarburization. they shall be free from seams or other defects likely to prejudice the performance of the finished springs.IS 4454( Part 2 ): 2001 10. the wire may have an oiled surface for all surface finishes.1) Nominal Diameter Permissible Depth of Surface in mm Defects of Wire.01 0.7. Decarburization mm FD (5) 1.5’%0 d’) From (1) 4. The wire in coils or on spools shall form one continuous Table 8 Permissible Depth of Surface Defects ( Clause 10.0% dl) 0.d’) 1)d is the nominal diameter Of wire.05 1.0?4. 7 . 12 SAMPLING Unless otherwise agreed to. with a maximum of 5 mi~ atter which.0 mm diameter and above. The permissible maximum radial depths of partial decarburized layer are shown in Table 9.00 6.1 The wire is supplied in coils.5% dl) 1.00 10.0%d’) 1. this shall be agreed upon at the time of enquiry and order.00 2.00 0. mm Up to and Including (2) WI (3) for Wire Grades From (1) TD (4) FD (5) 0. the method of drawing representative samples of the material and the criteria for conformity shall be as prescribed in Annex C.1) Nominal Diameter of Wire. 10.015 0.7Vo dl) 0.9 Decarburization Test Decarburization test shall be carried out in accordance with IS 6396. mm Permissible Depth of Surface for Wire Grades.8 Eddy Current Test Eddy current testing may be carried out for VD grades wires of diameter from 2. when examined microscopicrdly.4~o dl) 1)d is the nominal diameter Of wire.25’+’.5%d]) o.8%di) 1. 10.02 1.
and Test report. 15 MARKING 15. The details of conditions under which the licence for the use of the Standard Mark maybe granted to manufacturers or produc%rsmaybe obtained from the Bureau of Indian Standards. The wire grade.The suitable mode of packing shall be mutually agreed to between the purchaser and the manufacturer. . The coiled wire shall not have welds. ‘ 15. ANNEX ( Foreword) A INFORMATION TO BE GIVEN BY THE PURCHASER A-1 BASIS FOR ORDER While placing order for spring steel wires covered by this standard. Weight of the coilllmndle. and Date of supply. c) d) e) f) /3) h) Nominal wire diameteq Surface finish and coating where relevant. b) TD grade is intended for medium fatigue levels. The form and condition of delivery. the wire shall be supplied in slightly oiled condition 14 PACKING The packing of the material shall be done in such a way that corrosion does not attackthe material during transit. Any special requirement. The wires shall not be kinked and wavy. Cast or batch number. Wire diameter.1.2 The use of the Standard Mark is governed by the provisions of the Bureau ofIndian Standards Act. 1986 and the Rules and Regulations made thereunder. c) VD grade is intended for use under severe dynamic duty such as for valve springs.1 The material may also be marked with the StandardMark. b) c) d) e) f) Wire grade. such as required for clutch springs. ANNEX ( Foreword) B EXAMPLES OF APPLICATION OF OIL HARDENED AND TEMPERED STEEL WIRE B-1 FIELD OF APPLICATION As a rule unalloyed steels are used for applications atroomtemperature whereasalloyedsteelsaregenerally used at a temperatureaboveroomtemperature. 15.IS 4454( Part 2 ): 2001 length originating from one heat only. Tests required.2 Unless otherwise specified by the purchaser.1 Each coil of wire shall be legibly marked with the following information: a) Name of the supplier.1.the purchasershall s@@ the following: a) b) The desired quantity. required for normal springs.Alloyed steels may also be chosen for above average tensile strengths. 13. a) FD grade is intended for static applications.
of Coils for Physical Requirements (2) Permissible Number of Defective(s) (3) No. all the coils of wire of the same grade and diameter manufactured under essentially similar conditions of manufacture shall be grouped together to constitute a lot. C-2 SAMPLING The number of coils to be taken from a lot shall be according to CO1 and 2 of Table 10. wrapping and coating tests. The lot shall be considered to have conformed to the chemical requirements ifall the individual test pieces tested for chemical requirements pass the test.2 Tests for Chemical Requirements Unless otherwise agreed.2 are satisfied. tensile. 1 adequate length of test piece shall be cut from each end and subjected to physical tests. surface condition. bend. If a test piece fails to meet the respective chemical requirement. of Tests for Chemical Requirements (4) (1) Up to 25 26 to 50 51 to 150 151 to 300 301 and above 2 3 5 8 13 o 0 0 1 1 1 1 2 2 2 . the lot shall be considered to have 3 conformed to physical requirements. C-4 CRITERIAFORCONFORMITY A lot shall be considered to have conformed to the requirements of the specification if C-3.l Sample shall be taken from each lot and tested for conformity to the standard. A test piece failing to meet anyone of the requirements. If the number of defective found is less than or equal to the permissible number of defective specified in CO1 of Table 10.1 and C-3.1 Tests for Physical Requirements From the coils selected from CO1 and 2 of Table 10. shall be called a defective. of Coils in the Lot No. the following procedure shall be followed for chemical requirements: From these test pieces which have conformed to physical requirements tither test pieces shall be selected at random according to col 4 of Table 10. C-1. These samples 1 shallbetaken at randombyusing random number tables (see IS 4905). it shall be called a defective. C-3.2) No. C-3 PREPARATION OF SAMPLES AND NUMBER OF TESTS C-3. These samples shall be tested for all the chemical requirements. Table 10 Scale of Sampling and Permissible Number of Defective ( Clauses C-2.1 and C-3. namely. C-3.IS 4454( Part 2 ): 2001 ANNEX ( Clause C 12) SAMPLING AND CRITERIA FOR CONFORMITY C-1 LOT In any consignment. size.
Road.8327858 { 8327891. Enquiries relating to copyright be addressed to the Director (Publications). E9 MIDC. I. I. Andheri (East) MUMBAI 400093 Branches: Telegrams: Manaksanstha ( Common to all ofilces ) Telephone 3237617 { 3233841 3378499. Amendments Issued Since Publication Amend No. JAIPUR. Date of Issue Text Affected BUREAU OF INDIAN STANDARDS Headquarters: ManakBhavan. such as symbols and sizes. Copyright BIS has the copyright of all its publications. BIS. of necessary details.3239402 Regional Offices: Central: Manak Bhavan. 9 Bahadur Shah Zafar Marg NEWDELHI 110002 Eastqrn: 1/14 C. Users of Indian Standards should ascertain that they are in possession and ‘Standards: of the latest amendments Additions’.3233375. No part of these publications maybe reproducedin any form without the prior permission in writing of BIS. COIMBATORE. Kankurgachi CALCUTTA700 054 Northern: SCO 335-336. T.2350442 { 2351519. BHOPAL. NAGPUR. CHENNAI 600113 Western: Manakalaya. Standards are also reviewed periodically. BANGALORE.3379120 603843 { 602025 2350216. THIRUVANANTHAPURAM. lvfTD 4 ( 4068). Review of Indian Standards Amendments are issued to standards as the need arises on the basis of comrqents. RAJKOT. PUNE.8327892 AHMADABAD. IV Cross Road.2352315 8329295. in the course of implementing the standard. GHAZIABAD. Printed at New India Printing Press. This does not preclude the free use. Scheme VIIM. T. Khurj~ India . Marol. P. PATNA. I. marking and quality certification of goods and attending to connected matters in the country.Bureau of Indian Standards BIS is a statutory institution established under the Bureau of Zndian Standards Act. CHANDIGARH 160022 Southern: C. it is taken up for revision. HYDERABAD. Campus. GUWAHATI. 9 Bahadur Shah ZafarMarg. 1986 to promote harmonious development of the activities of standardization. BHUBANESHWAR. KANPUR. Sector 34-A. New Delhi 110002 Telephones: 3230131. LUCKNOW. FARIDABAD. V. a standard along with amendments is reaftlrmed when such neview indicates that no changes are needed. or edition by referring to the latest issue of ‘BIS Catalogue’ This Indian Standard Monthly has been developed from Doc : No. type or grade designations.3378561 { 3378626. if the review indicates that changes are needed.
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