标准摘要
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.
英文名称Steel, Bars, Forgings, Mechanical Tubing and Forging Stock, 0.50Cr - 0.55Ni - 0.20Mo (0.18 - 0.23C) (SAE 8620), Premium Aircraft Quality, Consumable Electrode Vacuum Remelted