YW35 STEEL AND LOW TEMPERATURE FISHPLATE MADE FROM IT

摘要

The present invention relates to a nickel-less high manganese steel, which has high strength and high toughness in low temperature, relates to YW35 steel used for high speed railway rail, relates to low temperature fishplate made from it. The present invention YW35 steel is based on high manganese steel. While carbon content is reduced, the present invention YW35 steel is joined with equal molybdenum and little vanadium and niobium, which improves low temperature property of steel. It is characterized in that chemical composition (%) comprises C 0.32-0.40, Mn 1.10-1.30, Si 0.30-0.50, P<0.035, S<0.035, Mo 0.15-0.25, V 0.06-0.20, Nb 0.04-0.07, Cu<0.20 and the balance of Fe. The experiment proved that YW35 steel low temperature fishplate has good property in normal temperature and low temperature, applies to fishplate used for increasingly developing high speed railway rail in our country.