DIFF Subgroup
C21D 1/55 Hardenability tests, e.g. end-quench tests
Introduced: January 1980
Full Title
General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering > Hardenability tests, e.g. end-quench tests
No child classifications to compare. This is a leaf node in both IPC and CPC.