How to Harden Steel - Hardening
This information is about how to case harden steel.
How many times have you wished that
you could put a tough edge on an
ordinary nail and drive it through a piece
of—say, 1/8-in. steel plate?
Now, using a non-poisonous alloy powder
developed by Samuel D. Necamp, known
as Hi-Speed-It you can do just that. The
powder fuses into the metal and increases the hardness in a matter of seconds.
How to Harden Steel
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