Brownells Heat Treating Bone Charcoal, 25 lb

Bone charcoal, possessing an optimal sieve size, is ideal for the crucible packing of steel components intended for hardening. Its high carbon content, free from waxes or fillers, results in exceptional color patterns. By mixing different types of charcoal, such as bone and wood, in specific ratios, users can achieve enhanced control over the resulting color and pattern.