Aerospace series - Steel FE-PL61 - Carburized, hardened and tempered - Bar - D<(Index)e> <kleiner => 40 mm; German and English version EN 2135:2017— 18 стр.
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 002: Bar and section; German and English version EN 4700-002:2016— 69 стр.
Aerospace series - Metallic materials - Rules for drafting and presentation of material standards - Part 005: Specific rules for steels; German and English version EN 4500-005:2012— 42 стр.