Heat Treating Fundamentals

Hardness & Hardening Temperature vs Carbon	Isothermal Transformation Diagram
Induction Hardening 1045 Steel * Depth at 50RC hardness    Because prior structure affects the response of the material, a quench and tempered part is optimum.
Typical Temperature Profiles through Heat Treating Time-temperature cycle for case hardened 2.63 in. diameter part showing temperature changes with time at indicated distances from center to surface of piece. Also illustrated is average temperature for various times during this surface hardening treatment.	Quench Media for Hardening

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