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SA-312 TP309HCb S42201 1.4311 316S42 2343 PH 14-8 Mo S44020 SA-814 S30409 A 920 Grade 15V41 Class 80 2377 2325 AISI501A A 167 Type 310S AISI502 SUH 616 AISI440F STR4 A 666 S30403 A 314 S21904 C 3315