Grade

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Function & Compounding
ASTM Grades:
N110 Gives maximum abrasion resistance, highest reinforcement and tensile. Used in off the road tire treads, tread rubber, bridge pads and conveyor belts.
N220 Provides excellent abrasion resistance, high tensile, good tear properties, moderate electrical conductivity. Used in truck and passenger tires, and mechanical goods.
N231 Low structure, high abrasion resistance, used mainly in tires where resistance to tear is important.
N234 Provides superior abrasion resistance vs. N220. Excellent wear and extrusion properties typical of improved process high structure blacks. Used in all elastomers, especially SBR/BR blends for treads and tread rubber.
N326 Low structure, high reinforcement, high tensile strength, very resistant to tear and chipping in natural rubber compounds. Used in mechanical goods, tire carcasses, belts, and off the road tread.
N330 Provides good abrasion resistance with high resilience, easy processing, and good tensile and tear properties. Wide range of applications in natural rubber and synthetic rubber compounds for both tires and mechanical goods.
N234 Provides superior abrasion resistance vs. N220. Excellent wear and extrusion properties typical of improved process high structure blacks. Used in all elastomers, especially SBR/BR blends for treads and tread rubber.
N339 Provides superior wear and cut growth resistance vs. N347. Excellent wear and extrusion properties typical of improved process high structure blacks. Used in passenger treads, tread rubber, and mechanical goods.
N347 Used in NR, SR. Provides excellent processing characteristics and permits use of high oil loading with low die swell. Better hysteresis properties than improved treadwear versions. Used in treads, tread rubber and mechanical goods.
N351 Provides good abrasion resistance in the N330 range. High structure, high modulus black with easy processing characteristics. Excellent dynamic properties. Used in the tire tread and carcass compounds and mechanical goods.
N358 Extra high structure. This can accommodate more oil than normal for equivalent modulus and hardness. Used in tire treads, tread rubber, and mechanical goods.
N550 Imparts medium abrasion resistance, high strength, low shrinkage, and die swell. Provides fast, smooth extrusions and relatively high resilience. Used in tire carcasses, cushion gum, tubing, cable jacketing, plastic conduit compounds and in extruded goods requiring excellent dimensional stability.
N650 High structure, medium reinforcement gives low die swell, smooth extrusions, and easy processing plus economical compounding. Used in tire carcasses and sidewalls, cable jackets, inner tubes, and hoses.
N660 Moderately reinforcing grade. Excellent general purpose black. Provides good reinforcement, low heat generation, smooth processing to all elastomers. Used in tire carcass sidewalls and mechanical goods.
N762 Moderately reinforcing grade, gives high resilience and excellent dynamic properties, low hysteresis, high loadings obtainable. Used for extruded goods, belts and hoses, and molded goods. Also used in plastic color concentrates.
N772 Moderately reinforcing grade, gives high resilience and excellent dynamic properties, used in tire carcass and mechanical goods.
N774 Moderately reinforcing grade, gives high resilience and excellent dynamic properties, low hysteresis, and high loadings obtainable. Used in tire carcasses and sidewalls, extruded goods, belts, and hoses. Also used in plastics color concentrates.
Specialty Grades:
SR401 N400 series black for synergistic properties.
SR530 Low sieve residue N550 for plastic and rubber applications where surface defects cannot be tolerated.
SR630 Low sieve residue N650 for plastic and rubber applications where surface defects cannot be tolerated.
Sidcon 119 Developed as a cost effective conductive carbon black. SR119 imparts electrical conductivity to rubber and plastic products while also offering improved processability.
 
Sidcon 159 Developed as a highly conductive carbon black. SR159 imparts electrical conductivity to rubber and plastic products at low loading levels.
Sidcon 419 Sidcon 419 was developed as a static dissipative carbon black that features improved conductivity and processability over semi-reinforcing grades of carbon black.