Stainless Steel Flanges (ASTM A182)

A182 – This specification covers forged or rolled alloy and stainless steel (304, 304L, 316L) flanges. This spec also covers other alloys including chrome (i.e. A182 F11)

Chemical Requirements of ASTM A182 material (Composition, %, max)

 

Symbol C Mn P S Si Ni Cr Mo
F304 0.08 2 0.045 0.03 1 8.0-11.0 18.0-20.0 _
F304L 0.03 2 0.045 0.03 1 8.0-13.0 18.0-20.0 _
F316 0.08 2 0.045 0.03 1 10.0-14.0 16.0-18.0 2.00-3.00
F316L 0.03 2 0.045 0.03 1 10.0-15.0 16.0-18.0 2.00-3.00
F321 0.08 2 0.045 0.03 1 9.0-12.0 17.0-19.0 _