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  • Users: jgwright
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  1. jgwright

    PWHT of 4140

    I am preparing to perform a PQR for a WPS for the welding of 4140 casing. The WT of the coupon is .5". Processes used will be GMAW ER80S-D2 root and SMAW E10018M (H4) fill (butt weld). Pre-heat will be 450F. The "PWHT" that has been recommended is 950F +/- 25. The base material was quenched and...

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