B-600

Fluoroelastomers

Technical Information
Introduction

Safety and Handling

Viton B-600* fluoroelastomer is a gum polymer that
demonstrates improved terpolymer processing andlower compound viscosity, along with the excellent heatand fluid resistance characteristics of the “B-family” ofViton™. Viton™ B-600 is especially suited to curing with thebisphenol system: Viton™ Curative No. 20 and No. 30 or
Viton™ Curative No. 50.

Before handling or processing Viton™ B-600, please readand be guided by the recommendations as described inthe Chemours technical bulletin, “Handling Precautions for
Viton™ and Related Chemicals.”™

Compared with Viton™ B, Viton™ B-600 provides:• Improved compression molding– Increased mold flow
– Easier mold release

Viton™ B-600 should be handled similar to other types ofViton™. Keep off skin and wash well after handling. For safe
handling of other compounding ingredients, please referto the respective manufacturers’ information.
Product Description
Chemical Composition

Terpolymer of hexafluoropropylene,
vinylidene fluoride, and tetrafluoroethylene

Physical Form

Free-flowing pellets

Color

Silver-gray, translucentOdor

None

Applications

Specific Gravity

1.85

Viton™ B-600 is highly recommended for applications,such as:Solubility

Low molecular weight esters and ketones

Storage Stability

Excellent

Mooney Viscosity, ML 1+10
at 121 °C (250 °F)

65• Improved extrusion and calendering• Increased cure rate
• Improved compression set resistance• Molded goods, e.g., shaft seals• Calendered goods, e.g., flue duct expansion joints
Use of Viton™ B-600
Table 1 contains information comparing compoundsof Viton™ B-600 and Viton™ B. Compound A is cured
with Viton™ Curative No. 50 (for better de-molding), andCompound B with Viton™ Curative No. 20 and No. 30. VPA
No. 3 processing aid is recommended for best de-molding.
A study that compares the effect of carbon black level ofViton™ B-600 is shown in Table 2.

*Viton™ B-600 was formerly named VTR-6173.

Viton™

Fluoroelastomers

Table 1. Performance of Viton™ B-600 in Typical Compounds
Viton™ B-600

Viton™ B-600

Viton™ B

Viton™ B-600

100100—Viton™ B——100

Viton Curative No. 20—

3.0

3.0

Viton Curative No. 30—

3.8

3.8™
™

Viton Curative No. 50

2.5——MT Black (N990)

303030High Activity Magnesium Oxide

333

Calcium Hydroxide

666

VPA No. 3

111

Minimum Viscosity, units

6465

79

Time to 10-unit rise, min>30>30>30™

Stock Properties
Mooney Scorch, MS at 121 °C (250 °F)

ODR at 177 °C (350 °F), Microdie, 3° arc, 12 min
ML, N·m (in·lb)

2.7 (23)

2.9 (25)

4.6 (40)

ts2, min

2.2

1.5

1.6

t’90, min

3.7

3.2

4.2

12.9 (111)10.7 (92)13.3 (115)MH, N·m (in·lb)
Vulcanizate Properties

Press Cure: 10 min at 177 °C (350 °F); Post-Cure: 24 hr at 232 °C (450 °F)
Stress/Strain at 23 °C (73 °F)—Original
100% Modulus, MPa (psi)

6.3 (910)

5.2 (755)

7.5 (1,085)

Tensile Strength, MPa (psi)13.0 (1,890)

12.5 (1,810)

14.8 (2,150)

Elongation at Break, %

220

260

215

Hardness, durometer A, points

74

72

76

100% Modulus, MPa (psi)

3.0 (430)

3.0 (435)

4.6 (670)

Tensile Strength, MPa (psi)

8.3 (1,200)

7.6 (1,105)

10.2 (1,485)

Elongation at Break, %

335

370

280

Hardness, durometer A, points

71

70

75

22 hr at 200 °C (392 °F)

13212670 hr at 200 °C (392 °F)

222838

Fuel C, 70 hr at 23 °C (73 °F)

3.0

2.9

2.6Methanol, 70 hr at 23 °C (73 °F)

1919

17Stauffer 7700 Fluid, 70 hr at 175 °C (347 °F)

999

Conc. Sulfuric Acid (96%), 70 hr at 150 °C (302 °F)

2224

28

Stress/Strain at 23 °C (73 °F)—After aging 70 hr at 275 °C (528 °F)

Compression Set, Method B, Plied Discs, %Fluid Resistance, Volume Swell, %Stress/Strain at 23 °C (73 °F)—After aging 70 hr at 150 °C (302 °F) in Conc. Sulfuric Acid (96%)
100% Modulus, MPa (psi)

3.6 (515)

3.5 (505)

3.7 (540)

Tensile Strength, MPa (psi)

7.7 (1,115)

7.4 (1,075)

7.3 (1,065)

Elongation at Break, %

250

265

245

Hardness, durometer A, points

68

65

67

2

Viton™

Fluoroelastomers

Table 2. The Effect of Carbon Black Level in Viton™ B-600
5 phr

15 phr30 phr45 phr60 phrViton™ B-600

93.4

93.4

93.4

93.4

93.4

MT Black (N990)

51530

4560

High-Activity Magnesium Oxide

33333

Calcium Hydroxide66666Viton Curative No. 20

3.0

3.0

3.0

3.0

3.0

Viton™ Curative No. 30

3.8

3.8

3.8

3.8

3.8

VPA No. 3

11111™

Stock Properties
Mooney Scorch, MS at 121 °C (250 °F)
Minimum Viscosity, units

53

57

7276

90

Time to 10-unit rise, min>30>30>30>30>30

2.8 (24)

2.8 (24)

3.5 (30)

3.2 (28)

3.7 (32)

1.9

1.9

1.8

1.7

1.5

ODR at 177 °C (350 °F), Microdie, 3° arc, 12 min
ML, N·m (in·lb)
ts2, mintc90, min
MH, N·m (in·lb)

3.63.6

3.9

3.9

3.9

9.7 (84)

10.2 (88)11.1 (96)11.7 (101)12.2 (105)

Vulcanizate Properties
Press Cure: 10 min at 177 °C (350 °F); Post-Cure: 24 hr at 232 °C (450 °F)
Stress/Strain at 23 °C (73 °F)—Original
100% Modulus, MPa (psi)

2.2 (315)

3.3 (475)

5.3 (775)

7.2 (1,045)

9.6 (1,385)

Tensile Strength, MPa (psi)11.1 (1,615)

12.3 (1,785)

12.7 (1,835)

12.1 (1,755)

12.0 (1,735)

Elongation at Break, %325

290225

190

140

Hardness, durometer A, points566371

82

88

Stress/Strain at 23 °C (73 °F)—After aging 70 hr at 275 °C (528 °F)
100% Modulus, MPa (psi)

1.1 (165)

1.7 (245)

2.9 (420)

4.0 (575)

4.7 (685)

Tensile Strength, MPa (psi)

7.4 (1,070)

7.0 (1,015)

7.1 (1,025)

6.4 (930)

6.1 (890)

Elongation at Break, %550

440375

340

285

Hardness, durometer A, points

55

62

71

83

89

Compression Set, Method B, Plied Discs, %22 hr at 200 °C (392 °F)

1820202436

70 hr at 200 °C (392 °F)

2528313445Fuel C, 70 hr at 23 °C (73 °F)

3.4

3.0

3.0

2.6

2.3Methanol, 70 hr at 23 °C (73 °F)

2321201411Stauffer 7700 Fluid, 70 hr at 175 °C (347 °F)

1110987

Conc. Sulfuric Acid (96%), 70 hr at 150 °C (302 °F)

2624222935

Fluid Resistance, Volume Swell, %Stress/Strain at 23 °C (73 °F)—After aging 70 hr at 150 °C (302 °F) in Conc. Sulfuric Acid (96%)
100% Modulus, MPa (psi)

1.3 (275)

2.5 (365)

3.7 (540)

3.0 (430)

2.0 (285)

Tensile Strength, MPa (psi)

8.8 (1,280)

8.3 (1,200)

8.1 (1,170)

5.5 (800)

6.8 (990)

Elongation at Break, %320300

245

325

390

Hardness, durometer A, points

51

57

65

67

59

3

Viton™

Fluoroelastomers

Test Procedures
Property Measured

Test Procedure

Compression Set

ASTM D395-85, Method B (25% deflection)

Compression Set—Low Temperature

ASTM D1299-87, Method B (25% deflection)

Compression Set, O-Rings

ASTM D1414-78 (87)

Hardness

ASTM D2240-87, durometer A

Mooney Scorch

ASTM D1646-87, using the small rotor. Minimum viscosity and time to a1-, 5-, and 10-unit rise are reported.

Mooney Viscosity

ASTM D1646-87, ten pass 100 °C (212 °F) and 121 °C (250 °F)

ODR (vulcanization characteristics measured with an oscillating disk cure meter)

ASTM D2084

Property Change After Oven Heat-Aging

ASTM D573-88

Stress/Strain Properties
100% Modulus
Tensile Strength
Elongation at BreakASTM D412-87, pulled at 8.5 mm/sec (20 in/min)

Stiffness, Torsional, Clash-Berg

ASTM D1043-87

Temperature Retraction

ASTM D1329-88

Volume Change in Fluids

ASTM D471-79

Note: Test temperature is 24 °C (75 °F), except where specified otherwise.

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The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

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