規格番号：ASTM A913/A913M
タイトル：Standard Specification for High-Strength Low-Alloy Steel Shapes of Structural Quality, Produced by Quenching and Self-Tempering Process (QST)
焼入れおよび自己焼入れプロセス（QST）で製造された高強度低合金鋼の構造品質規格
http://www.astm.org/cgi-bin/resolver.cgi?A913A913M