Specification and Guidance for Heat Treatment

The heat treatment process is a complex and involved process, and is alloy specific. There are many steps and stages in heat treatment, including solution treatment, annealing, stabilization, precipitation, normalization, and stress relief. Fabricators and vendors often establish their own proprietary heat treatment processes and specifications. Many heat treatment options can produce similar material characteristics of the OEM coimterpart. However, few can guarantee identical properties. For example, several heat treatment schedules will produce the same hardness number for a steel, but with different fatigue strengths. 

SAE AMS 2759, Heat Treatment of Steel Parts, General Requirements (SAE, 2008), provides the general requirements for the heat treatment of steel parts. In conjunction with these general requirements in AMS 2759, the following specifications provide further details for specific heat treatment procedures  

AMS 2759/3 establishes the requirements for heat treatment of precipitation-hardening corrosion-resistant and maraging steel parts. 

AMS 2759/4 establishes the requirements for annealing, stress reliving, and stabilizing heat treatment of ausfenfic corrosion-resistant steel parts. 

AMS 2759/5 provides guidance for martensitic corrosion-resistant steel parts. 

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