Rubber Black Equihardness Conversion Table
SOUTH AMERICA
CROSS TABLE
 REGAL 300 - ASTM N326 REGAL 85 SPHERON 5000 SPHERON 6000 SPHERON 6400 STERLING NS-1 - ASTM N762 STERLING SO - ASTM N550 STERLING 105 - ASTM N683 STERLING 1120 STERLING 6740 STERLING V - ASTM N660 STERLING VH - ASTM N650 VULCAN 3 - ASTM N330 VULCAN 3H - ASTM N347 VULCAN 6 - ASTM N220 VULCAN 6LM - ASTM N231 VULCAN 7H - ASTM N234 VULCAN 9 - ASTM N115 VULCAN J - ASTM N375 VULCAN K - ASTM N351 VULCAN M - ASTM N339 VULCAN XC-72 VULCAN 10 - ASTM N120 VULCAN 10H - ASTM N134
REGAL 300 - ASTM N326   1.90 1.10 1.26 1.28 1.30 1.00 1.00 1.90 0.92 1.12 1.05 0.94 0.88 0.88 0.92 0.85 0.88 0.88 0.91 0.88 0.83 0.86 0.85
REGAL 85 0.53   0.58 0.66 0.67 0.68 0.53 0.53 1.00 0.48 0.59 0.55 0.49 0.46 0.46 0.48 0.45 0.46 0.46 0.48 0.46 0.44 0.45 0.45
SPHERON 5000 0.91 1.73   1.15 1.16 1.18 0.91 0.91 1.73 0.84 1.02 0.95 0.85 0.80 0.80 0.84 0.77 0.80 0.80 0.83 0.80 0.75 0.78 0.77
SPHERON 6000 0.79 1.51 0.87   1.02 1.03 0.79 0.79 1.51 0.73 0.89 0.83 0.75 0.70 0.70 0.73 0.67 0.70 0.70 0.72 0.70 0.66 0.68 0.67
SPHERON 6400 0.78 1.48 0.86 0.98   1.02 0.78 0.78 1.48 0.72 0.88 0.82 0.73 0.69 0.69 0.72 0.66 0.69 0.69 0.71 0.69 0.65 0.67 0.66
STERLING NS-1 - ASTM N762 0.77 1.46 0.85 0.97 0.98   0.77 0.77 1.46 0.71 0.86 0.81 0.72 0.68 0.68 0.71 0.65 0.68 0.68 0.70 0.68 0.64 0.66 0.65
STERLING SO - ASTM N550 1.00 1.90 1.10 1.26 1.28 1.30   1.00 1.90 0.92 1.12 1.05 0.94 0.88 0.88 0.92 0.85 0.88 0.88 0.91 0.88 0.83 0.86 0.85
STERLING 105 - ASTM N683 1.00 1.90 1.10 1.26 1.28 1.30 1.00   1.90 0.92 1.12 1.05 0.94 0.88 0.88 0.92 0.85 0.88 0.88 0.91 0.88 0.83 0.86 0.85
STERLING 1120 0.53 1.00 0.58 0.66 0.67 0.68 0.53 0.53   0.48 0.59 0.55 0.49 0.46 0.46 0.48 0.45 0.46 0.46 0.48 0.46 0.44 0.45 0.45
STERLING 6740 1.09 2.07 1.20 1.37 1.39 1.41 1.09 1.09 2.07   1.22 1.14 1.02 0.96 0.96 1.00 0.92 0.96 0.96 0.99 0.96 0.90 0.93 0.92
STERLING V - ASTM N660 0.89 1.70 0.98 1.13 1.14 1.16 0.89 0.89 1.70 0.82   0.94 0.84 0.79 0.79 0.82 0.76 0.79 0.79 0.81 0.79 0.74 0.77 0.76
STERLING VH - ASTM N650 0.95 1.81 1.05 1.20 1.22 1.24 0.95 0.95 1.81 0.88 1.07   0.90 0.84 0.84 0.88 0.81 0.84 0.84 0.87 0.84 0.79 0.82 0.81
VULCAN 3 - ASTM N330 1.00 2.02 1.17 1.34 1.36 1.38 1.06 1.06 2.02 0.98 1.19 1.12   0.94 0.94 0.98 0.90 0.94 0.94 0.97 0.94 0.88 0.91 0.90
VULCAN 3H - ASTM N347 1.14 2.16 1.25 1.45 1.45 1.48 1.14 1.14 2.16 1.05 1.27 1.19 1.07   1.00 1.05 0.97 1.00 1.00 1.03 1.00 0.94 0.98 0.97
VULCAN 6 - ASTM N220 1.14 2.16 1.25 1.43 1.45 1.53 1.14 1.14 2.16 1.05 1.27 1.19 1.07 1.00   1.05 0.97 1.00 1.00 1.03 1.00 0.94 0.98 0.97
VULCAN 6LM - ASTM N231 1.09 2.07 1.20 1.37 1.39 1.41 1.09 1.09 2.07 1.00 1.22 1.14 1.02 0.96 0.96   0.92 0.96 0.96 0.99 0.96 0.90 0.93 0.92
VULCAN 7H - ASTM N234 1.18 2.24 1.29 1.48 1.51 1.53 1.18 1.18 2.24 1.08 1.32 1.24 1.11 1.04 1.04 1.08   1.04 1.04 1.07 1.04 0.98 1.01 1.00
VULCAN 9 - ASTM N115 1.14 2.16 1.25 1.43 1.45 1.48 1.14 1.14 2.16 1.05 1.27 1.19 1.07 1.00 1.00 1.05 0.97   1.00 1.03 1.00 0.94 0.98 0.97
VULCAN J - ASTM N375 1.14 2.16 1.25 1.43 1.45 1.48 1.14 1.14 2.16 1.05 1.27 1.19 1.07 1.00 1.00 1.05 0.97 1.00   1.03 1.00 0.94 0.98 0.97
VULCAN K - ASTM N351 1.10 2.09 121 1.38 1.41 1.43 1.10 1.10 2.09 1.01 1.23 1.15 1.03 0.97 0.97 1.01 0.95 0.97 0.97   0.97 0.91 0.95 0.93
VULCAN M - ASTM N339 1.14 2.16 1.23 1.43 1.45 1.48 1.14 1.14 2.16 1.05 1.27 1.19 1.07 1.00 1.00 1.05 0.97 1.00 1.00 1.03   0.94 0.98 0.97
VULCAN XC-72 1.20 2.29 1.33 1.52 1.54 1.57 1.20 1.20 2.29 1.11 1.35 1.27 1.13 1.06 1.06 1.11 1.02 1.06 1.06 1.10 1.06   1.04 1.02
VULCAN 10 - ASTM N120 1.16 2.21 1.28 1.47 1.49 1.51 1.16 1.16 2.21 1.07 1.30 1.22 1.09 1.02 1.02 1.07 0.99 1.02 1.02 1.06 1.02 0.97   0.99
VULCAN 10H - ASTM N134 1.18 2.24 1.29 1.48 1.51 1.53 1.18 1.18 2.24 1.08 1.32 1.24 1.11 1.04 1.04 1.08 1.00 1.04 1.04 1.07 1.04 0.98 1.01

Example of use: from STERLING SO (left column) to SPHERON 5000 (top row) = 1.10

REGAL®, SPHERON®, STERLING® and VULCAN® are registered trademarks for carbon blacks manufactured by Cabot Corporation.

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