SS dual grade
SS dual grade
(OP)
I'm working for a Petrochemical Indutry involed in vlaves production: I would be happy if someone can explane to me the meaning of "dual grade" for SS material (e.g. 316/3163L) and whether some specs/ASME code decalre the material as dual grade or not.
Thanks
Carlos





RE: SS dual grade
RE: SS dual grade
This because of our customer has required to us this materials and we can suppy the SS having the chemical composition as per "L" grade and the mechanical proprieties as per 304 (slighty higer than L grade).
From the quality point of view, how we can manage this matters?
Thanks
Carlos
RE: SS dual grade
I suppose that TP304 H is an example of dual grade SS. TP 304 has a Carbon content of 0.08 max. TP 304L has a Carbon content of 0.035 max. TP 304 H has a carbon content of 0.04 min. and 0.10max. Other examples are TP316H, TP321H, 347H and 348H. Stainless steels of H grade have higher corrosion resistance at high temperatures than the other grades.
Luis Marques
RE: SS dual grade