1、astm a276(standard specification for stainless steel bars棒材 and shapes型材) 304cmnpssicrni要求,%0.082.000.0450.0301.0018.0–20.08.0-11.02、astm a240(chromium and chromium-nickel stainless steel plate板材,sheet片材, and strip带材 for pressure essels and for general applications) 304cmnpssicrnin要求,%0.072.000.0450.0300.07517.5–19.58.0–10.50.103、jis g4305(cold-rolled 冷轧stainless steel plate板材, sheet片材 and strip带材) sus 304cmnpssicrni要求,%0.082.000.0450.0301.0018.0–20.08.0-10.54、jis g4303 (stainless steel bars不锈钢棒) sus 304cmnpssicrni要求,%0.082.000.0450.0301.0018.0–20.08.0-10.5以上四个标准只是常见的几个标准,其实astm和jis中有提到304的不止这几个标准。每个标准其实对304的要求不尽相同,所以要想确定一个材料是不是304,准确的表达方式应该说是否符合某个产品标准中的304要求,材质证明书一般要出具以下类型报告: