規格番号：ASTM A958/A958M
タイトル：Standard Specification for Steel Castings, Carbon and Alloy, with Tensile Requirements, Chemical Requirements Similar to Standard Wrought Grades
標準的な鍛造品と同様の化学的要求、引張条件を備えた鋼鋳物、炭素および合金の標準仕様
http://www.astm.org/cgi-bin/resolver.cgi?A958A958M