Manganese-chromium-tungsten Bainitic Steel

The present invention describes a manganese-chromium-tungsten bainitic steel, belongs to steel alloy technology field. Characterized in that: it comprises the following components, its percentage by weight: C0.06 ~ 0.55wt. %; Mn1.90 ~ 3.00wt. %; Si0.20 ~ 2.00wt. %; Cr0.10 ~ 2.00wt. %; W0.10 ~ 1.00wt. %; Remainder being Fe.

Steels of the invention is a new class of manganese-chromium-tungsten bainitic steel, manganese, silicon, chromium as the main alloying elements, plus tungsten as the main and auxiliary elements, with high strength and toughness and bainite air cooling hardenability, under air cooling conditions can be obtained bainite / martensite phase complex organization, exempt from hardening process for the manufacture of a variety of shaft parts, structural parts, all kinds of springs, wear parts, precision molds and resistance grinding steel castings.

Manganese-chromium-tungsten bainitic steel after tempering with excellent strength and toughness, which can close substitutability quenched and tempered steel, used to make a variety of high-strength structural parts, and surface hardening.




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