基本信息
标准编号: EN ISO 4957 : 1999
标准类别:Standard
出版单位:Comite Europeen de Normalisation
标准页数:0
标准简介
Describes 4 grades of wrought tool steels - 1 non-alloy cold-work steels 2 alloy cold-work tool steels 3 alloy hot-work tool steels 4 high-speed tool steels