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Lesson 05·Selective hardening
Induction hardening
Localized, fast, no atmosphere. The treatment of choice when you need just the end of a punch hard.
4 min readLesson 5 of 10
Knowledge check
You need a hard wear pad on the end of a 4140 shaft, but the rest of the shaft has to stay tough for weldability and machining. Induction or carburizing?