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How to Harden and Temper 4140 Medium Carbon Steel

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Prof Johnny

The stepbystep procedure in hardening and tempering 4140 carbon steel.

The recommended temperature in hardening and tempering using a high and low electric furnace.

The recommended hardness of a transmission gear.

How to test the hardness of the workpiece using Rockwell Hardness Tester.

posted by Makabayo7d