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SAE AMS6491F

Действует
Steel Bars, Forgings, and Tubing 4.1Cr - 4.2Mo - 1.0V (0.80 - 0.85C) (M-50) Premium Aircraft-Quality for Bearing Applications, Double Vacuum Melted
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.