WPS A 709 Gr. 50
WPS A 709 Gr. 50
(OP)
Good Morning:
I have to do a wps for the STEEL A709 GR 50, under asme IX, but this material is not in QW-422.
The A572 Gr. 50 HAVE THE SAME COMPOSITION that A709 gr 50, the question is if can i use to the PQR the steel A36, BECAUSE IS THE SAME Pn° y Gr. N° that A572? or that is a big mistake.
Thank for your answer
See you





RE: WPS A 709 Gr. 50
RE: WPS A 709 Gr. 50
But when i compare the composition and mechanics propierties of A572 AND A709 are the same.
RE: WPS A 709 Gr. 50
Even after review of NonMandatory Appendix D in Section IX, there is no currently assigned P-No for this material. There is for A 572 and A 36 for the same strength grades. Until one is assigned by Section IX, the WPS will require qualification using A 709 base material.
You can try using dual certified material (A 36/A709), but this will require purchase of dual certified material so just use A709.
RE: WPS A 709 Gr. 50
RE: WPS A 709 Gr. 50