CORAX® N 550 is a standard grade of furnace black carbon black manufactured by Orion Engineered Carbons. It is classified under ASTM D 1765 as a soft black, carcass grade, semi-reinforcing carbon black. This material is used in various rubber applications to enhance properties such as strength, durability, and conductivity.
Physical Properties
- Bulk Density: 0.365 g/cc (0.0132 lb/in³) (Pour Density; ASTM D 1513)
- Oil Absorption:
- 85% (ml/100 g) (Compressed Sample; ASTM D 3493)
- 121% (ml/100 g) (ASTM D 2414)
- Loss on Ignition: ≤ 1.0% (Heating Loss; ASTM D 1509)
- Specific Surface Area: 39 m²/g (Statistical thickness surface area; ASTM D 6556)
- Iodine Absorption Number: 43 mg/g (ASTM D 1510)
Descriptive Properties
- Fines: < 7.0% (ASTM D 1508)
- Individual Pellet Hardness: < 45 g (ASTM D 5230, average 1.4 - 1.7 mm)
- Sieve Residue: < 300 ppm (ASTM D 1514)
Application
CORAX® N 550 is utilized in various rubber products to improve the performance and longevity of the final product. Its semi-reinforcing nature makes it suitable for enhancing the mechanical properties of rubber compounds without significantly affecting their flexibility.