SS EN ISO 4957:2018现行
Tool steels (ISO 4957:2018)
出版：Standardiserings-Kommissionen I Sverige
专家解读视频
this document specifies requirements for the following grades of wrought tools steels a)non alloy cold work tools steels b)alloy cold work tools steels c) alloy hot work tools steel d) high speed tools steels .
EN ISO 4957 : 2018 - Identical
EN ISO 4957 : 1999 - Identical
ISO 4957:2018 - Identical
EN ISO 4957 : 2018 - Identical
EN ISO 4957 : 1999 - Identical
ISO 4957:2018 - Identical
