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SAE AMS6499B

Заменен
Steel, Bars, Forgings, and Tubing 2.7Si - 0.85Cr - 1.8Ni - 0.4Mo - 0.2V - (0.37 - 0.44C) Double Vacuum Melted
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.