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  1. 74tiger

    P91 to P22 Tensile Test Question

    We recently welded a specimen for procedure qualification for a SA-335 P91 to SA-335 P22 procedure. The procedure was performed on 6" Sch. 160 pipe with ER90S-B3 root and E9018-B3. Sample was PWHT at 1350F for 2 hr. Ramps were between 500F and 600F above 600F. The Tensile specimens came back as...

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