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, 2.7Si - 0.85Cr - 1.8Ni - 0.4Mo - 0.2V - (0.37 - 0.44C) Premium Aircraft Quality, Double Vacuum Melted