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what are hard steel

Answer» <p>Hardened steelis a type of medium tohardplain carbonsteelthat has undergone heat treatment, quenching and further reheating. Components made ofhardened steelhave ahardexterior casing and a robust core, and include arbors, axles, link components, driving pinions, camshafts and cardan joints.</p><p>Like my answer if you find it useful!</p>


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