ASTM A240M是标准号,不是材质牌号。该标准中有很多种不锈钢材质。
ASTM A240M Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
不锈钢厚板、薄板和带材
说明:ASTM是美国材料与试验协会(American Society for Testing and Materials)的标准。