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  1. sealmat

    Heat treatment of 4130 channels

    We are having problems related to flatness after heat treatment on 4130 rectangular channels which a about 7" long, stamped from 0.06" sheet. The rectangular 'legs' are about 0.3" tall. We are performing a prehardening stress-releif per AMS 2759/1, followed by hardnening, quench and temper to...

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