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MATERIALS SCIENCE PREPARATION FOR …
www.engineeringonline.ncsu.eduSTEEL --- HARDENABILITY 23. Heat treatable steels generally have high hardenabilities. Comparing a 1040 steel with a 4340 steel, how much deeper can the 4340 steel be hardened to level of Rc of 50? (A) 60mm (B) 45mm (C) 30mm (D) 15mm