Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 006: Pre-production and production forgings; German and English version EN 4700-006:2010— 62 стр.
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 005: Forging stock; German and English version EN 4700-005:2010— 52 стр.
Manufacturing Sequence for Fabrication of High-Strength Steel Parts 300M or 4340 Modified Low-Alloy Steels 270,000 psi (1860 MPa) Tensile Strength and Higher
Low Stress Grinding of Steel Parts Heat Treated to 180 ksi or Over, and Low Stress Grinding of Chrome Plating Applied to Steel Parts Heat Treated to 180 ksi or Over