Products and Technology

  1. Home
  2. Products and Technology
  3. Products
  4. Asahi carbon black (for rubber) NR compound test value of main products

NR compound test value of main products

Description Asahi #80 Asahi #70 Asahi #70L Asahi F-200GS Asahi #65 Asahi #60HN Asahi #60U
Test items
Mooney viscosity
@125 degrees ML1+4'
63 59 57 58 53 55 53
Mooney scorch
@125 degrees t5
10.3 8.8 9.0 9.3 11.0 11.5 11.4
Hardness(JIS) 68 68 65 68 65 67 64
300% modulus(MPa) 13.6 15.5 12.8 16.9 13.9 15.5 14.9
Tensile strength(MPa) 26.3 25.8 27.2 23.4 22.9 23.7 24.2
Ultimate elongation(%) 501 459 521 406 459 442 453
Rebound resilience(%) 51 57 58 60 64 62 65
Description Asahi #55 Asahi #50HG Asahi #52 Asahi #51 Asahi #50U Asahi #50 Asahi #35
Test items
Mooney viscosity
@125 degrees ML1+4'
49 51 54 47 49 46 46
Mooney scorch
@125 degrees t5
12.1 13.7 15.5 15.3 13.5 15.2 13.2
Hardness(JIS) 60 62 64 59 59 58 57
300% modulus(MPa) 13.3 13.9 14.6 11.5 12.1 11.2 10.8
Tensile strength(MPa) 23.1 21.1 22.5 22.8 24.5 23.4 24.5
Ultimate elongation(%) 469 437 444 501 503 508 528
Rebound resilience(%) 69 68 66 70 69 70 71
Description Asahi #15HS Asahi #15 Asahi #8 Asahi Thermal Asahi AX-015 IRB7
Test items
Mooney viscosity
@125 degrees ML1+4'
57 49 47 50 72 62
Mooney scorch
@125 degrees t5
12.2 11.8 12.7 11.6 9.9 9.2
Hardness(JIS) 71 62 59 61 72 70
300% modulus(MPa) 17.3 14.0 11.7 11.6 16.7 18.7
Tensile strength(MPa) 18.3 19.7 20.7 22.9 24.3 27.0
Ultimate elongation(%) 325 420 469 510 356 420
Rebound resilience(%) 61 68 70 67 48 57
  • * Vulcanization time is 30 min.
  • * Asahi Thermal, Asahi #15, Asahi #15HS compound content is 75 parts per one hundred parts of rubber.

NR compound list

NR 100
Carbon black 50
Stearic acid 3
Zinc oxide 5
Accelerator DM 0.6
Sulfur 2.5