2015-12-21astm 美国材料与试验协会(American Society for Testing and Materials)标准。 astm-a240m-13a 一般用途用压力容器用铬不锈钢和铬-镍不锈钢厚钢板,薄钢板和带 This specification covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications