52 U. S.
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gineering Heat Treatment of Series. Steel No. 3) Shows how steel is pack and gas carburized; a thin, hard case obtained by cyaniding; nitriding to obtain a very hard case; how ste flame and induction hardened. S mentary filmstrip, same title, also able. (OE 172; 14 minutes)
Complete catalog record
Film number: OE 170
Type: Motion Picture
Type: Motion Picture
Sources
- 3434 U.S. Government Films — title, year, creator, format, description, catalog record
Record added 2026-07-13 14:19:16