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SAE AMS6447 Revision H, February 1, 2016
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Steel, Bars, Forgings, and Tubing 1.4Cr (0.93-1.05C) (SAE 52100) Electroslag Remelted
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AIA/NAS Aerospace Standards

This specification covers a premium aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.


These products have been used typically for bearing components requiring a through-hardening steel usually with hardness of approximately 60 HRC, section thickness under 0.50 inch (12.7 mm), and subject to very rigid inspection standards, but usage is not limited to such applications.