Ams 2759 2 ❲Easy❳

: To achieve these strength levels, parts are heated to an austenitizing temperature (e.g., 1700°F for D6AC with approval) and then quenched. The specification also allows for marquenching in certain revisions to minimize distortion.

Often required via "test coupons" that accompany the parts through the heat treat cycle. ams 2759 2

| Issue | Cause | Prevention | |-------|-------|-------------| | Low tensile strength | Over-tempering | Control tempering temp ±10°F | | Quench cracking | Severe quench rate | Use slower oil, avoid sharp corners | | Decarburization | Poor atmosphere | Use vacuum or endothermic gas | | Retained austenite | Insufficient tempering | Double temper mandatory | | Hydrogen embrittlement | Plating without baking | Strict adherence to post-plate bake | : To achieve these strength levels, parts are