Engineering Series Heat Treatment of Steel

3 films in this series.

Title ▼	Year	Creator	Length	Format	Sound
Elements Of Tempering, Normalizing And Annealing	1945	Audio Productions Inc	22 min	16mm	sound
Elements Of Surface Hardening	1945	Audio Productions Inc		16mm	sound
Elements Of Hardening	1945	U S Office Of Education		16mm	sound