SAE - AMS6370J
STEEL BARS, FORGINGS, AND RINGS 0.95Cr - 0.20Mo (0.28 - 0.33C) (SAE 4130)
|Publication Date:||1 October 1983|
Form: This Specification covers an aircraft-quality, low-alloy steel in the form of bars, forgings, flash welded rings, and stock for forging and flash welded rings.
Application: Primarily for parts with section 0.50 in. (12.5 mm) or less in 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 for parts of greater thickness requiring proportionately lower hardness.