High carbon content and high strength heat-treated steel...

Details High carbon content and high strength heat-treated steel... High carbon content and high strength heat-treated steel...

C - Chemistry, Metallurgy

22

C

C22C 38/28 (2006.01) C22C 38/22 (2006.01) C22C 38/24 (2006.01) C22C 38/38 (2006.01)

Patent

CA 2721736

A high carbon content and high strength heat-treated steel rail including by weight 0.80-1.20% carbon, 0.20-1.20% silicon, 0.20-1.60% manganese, 0.15-1.20% chromium, 0.01-0.20% vanadium, 0.002-0.050% titanium, less than or equal to 0.030% phosphorus, less than or equal to 0.030% sulfur, less than or equal to 0.0 10% aluminum, less than or equal to 0.0100% nitrogen, and iron. The steel rail has excellent wear resistance and plasticity and can satisfy the requirement for overloading. A method for producing the steal rail by heating a bloom to a heating temperature, multi-pass rolling, and accelerated cooling, wherein a maximum heating temperature (°C) of the bloom is equal to 1,400 minus 100[%C], [%C] representing the carbon content (wt.%) of the bloom multiplied by 100.

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