SAE Standards Works
AMS E Carbon and Low Alloy Steels Committee
AMS6348D - Steel, Bars, 0.95Cr - 0.20Mo (0.28 to 0.33C) (SAE 4130), Normalized
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Steel, Bars, 0.95Cr - 0.20Mo (0.28 to 0.33C) (SAE 4130), Normalized
This specification covers an aircraft-quality, low-alloy steel in the form of bars. These bars have been used typically for parts, 0.50 inch (12.7 mm) and under in section thickness at time of heat treatment, requiring a through-hardening steel capable of developing hardness as high as 35 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.
AMS6348D results from a Five Year Review and update of this specification.