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, 1.5Si - 1.25Cr - 3.8Ni - 0.50Mo - 0.30V (0.40C), Vacuum Remelted, Annealed