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AMS6324J - Steel Bars, Forgings, and Tubing, 0.65Cr - 0.70Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740 Modified)

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Document Number: AMS6324J
Project Initiation: 04-11-2014
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Revision Number: J
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Title
Steel Bars, Forgings, and Tubing, 0.65Cr - 0.70Ni - 0.25Mo (0.38 - 0.43C) (SAE 8740 Modified)
Scope
This specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, mechanical tubing, and forging stock.<p>These products have been used typically for parts, 0.750 inch (19.05 mm) and under in section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 50 HRC when properly hardened and tempered and also parts of greater thickness but requiring proportionately lower hardness, but usage is not limited to such applications.
Rationale
5 Year Review
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