... -5mm 3. Surface: 2B, BA, No.1, No.4 etc.420 Stainless steel coilStainless steel is a production which not easy ... ,302,303,304,304L,309,310,316,321,410,410S,420,420J1,430,304F,316L, 316F,316Ti,310s,314,314l,317 ... ,317l,302HQ. 400series:416,410,420,420J2,430,430F,431.2. Standard: ASTM, AISI,JIS, DIN3 ...