When a low carbon steel is undergoing heat treatment for the purposes of casehardening, what is the process that distinguishes this procedure from other hardening methods? |
A) After the steel is heated above its critical temperature, it is quenched in a carbon bath. |
B) After the steel is heated above its critical temperature, it is quenched in cold water. |
C) After the steel is heated above its critical temperature, it is allowed to cool slowly in air. |
D) After the steel is heated above its melting temperature, it is quenched in a carbon bath. |