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Subject: Air hardening tool steels

Date: 12/20/02 at 12:33 PM
Posted by: Bob W.
E-mail: btprec@bitterroot.net
Message Posted:

I am interested in a history question. When were air hardening tool steels more especially A2 and A10 developed? Are there any good links on the history of air hardening tool steels? Does anyone know approximately how long they have been available?

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