A 283 gR C & A 285 gr C
A 283 gR C & A 285 gr C
(OP)
Dear Friends
I would like to know what is a difference between A283 gr c and A285 gr c .I reviewing an spec and my contactor ask my to replace A283 gr c with A285 Grade c. Can you give me an advices?
regards
I would like to know what is a difference between A283 gr c and A285 gr c .I reviewing an spec and my contactor ask my to replace A283 gr c with A285 Grade c. Can you give me an advices?
regards





RE: A 283 gR C & A 285 gr C
ASTM A 285 is a specification for pressure vessel plates, carbon steel, there are 3 grades (Gr C 55-75 Ksi, 30 Ksi YS).
What is the difference? The A 283 is used for general application and is structural quality, and is not permitted for pressure retaining application.
A 285 is for pressure vessel applications, with specific requirements that allow it to be used in pressure vessel application.
RE: A 283 gR C & A 285 gr C
RE: A 283 gR C & A 285 gr C
Call several suppliers and find out. Weldability- yes, for Grade C.
RE: A 283 gR C & A 285 gr C
SA-283 Gr A, B, C, D are included in table UCS-23. So they are allowed for pressure vessels (not for steam boiler) as long as as the plate thickness is not over 5/8" and the vessel is not in lethal service. See UCS-6.
RE: A 283 gR C & A 285 gr C
Yes, I forgot about this material being permitted for pressure retaining items under very controlled restrictions, similar to SA 36.
RE: A 283 gR C & A 285 gr C
A-285 could also be made fully silicon killed at the producers option; per 1.1, "These plates are intended for fusion welded pressure vessels." The referenced standard is A-20.
RE: A 283 gR C & A 285 gr C