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SAE AMS6549A

Действует
Steel Bars, Forgings, and Tubing 1.0Cr - 3.2Ni - 0.2Mo (0.12 - 0.17C) Premium Aircraft-Quality Double Vacuum Melted
This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.