MIL-S-12515C, MILITARY SPECIFICATION: SURFACE HARDENING: FLAME AND INDUCTION (FOR FERROUS ALLOYS) (31 AUG 1983) [NO S/S DOCUMENT]

MIL-S-12515C, MILITARY SPECIFICATION: SURFACE HARDENING: FLAME AND INDUCTION (FOR FERROUS ALLOYS) (31 AUG 1983) [NO S/S DOCUMENT]., This specification covers the surface hardening of ferrous alloys by gas flame or electromagnetic induction heating followed by a quenching or relatively rapid cooling operation (see 6.1 and 3.3 and 3.5).