... -A554 From the nature, To the excellence. NameStainless Steel Round Tube / PipeStandardASTM A312, A249,A269 and A270,A554Material Grade201,202 ... ,304,316,316L,430Main Material a) 201 (Ni0.8%-1%) b) 202 (Ni: 3.5%-4.5%)c) ... .15≤0.08≤0.035≤0.12Si≤1.00≤1.00≤1.00≤1.00≤1.00Mn5.5-7.57.5-10≤2 ... .00≤2.00≤1.00P≤0.06≤0.06≤0.045≤0.045 ... 030≤0.030Cr13-1514-1718-2016-1816-18N0.7-1.13.5-4.58-10.510-14 Mo 2 ...