标准摘要
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, flash-welded rings, and stock for forging or flash-welded rings.
英文名称Steel Bars, Forgings, Rings and Stock for Forging and Flash-Welded Rings 0.95Cr - 0.20Mo (0.28 - 0.33C), (SAE 4130) Aircraft Quality