SS316 is defined in ASTM A240 and ASTM A276, it's for plate, sheet, strip or stainless steel bars. Another grade is named as F316, which is from ASTM A182 for Forged parts only. TP316 will be found in ATSTM A376 for pipe only. If you want to buy castings, Pls indicate CF8M as material, otherwise you can adopt SS316.
A forged valve body is produced by forging and machining solid steel. The key specifications for cast steel valves body materials are ASTM A216 (WCA, WCB, WCC), ASTM A352 LCB/LCC (low-temperature), and ASTM A351 CF8/CF8M. ASTM A105, A350 and A182 cover body materials for small size (or high pressure) forged valves.
Scope1.1 This specification covers austenitic and austenitic-ferritic (duplex) steel castings for valves, flanges, fittings, and other pressure-containing parts (Note 1). Note 1-Carbon steel castings for pressure-containing parts are covered by Specificat
TABLE 2 Chemical Requirements NOTE 1—Tungsten is a new element for Table 2. Element, % (max, ex-cept where range is given) CF3, CF3A CF8, CF8A CF3M, CF-3MA CF8M CF3MN CF8C CF10 CF-10M (J92-901) CH8 CH10 CH20 CK20 HK30 HK40 HT30 CF