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　　The material GSCM435-C made by XINGTAI IRON AND STEEL CORP., LTD is mainly used in car with a magnitude of 12.9 high strength fasteners. This product has good surface quality, smaller decarburization  layer and stable composition.It also possesses high strength,high toughness, wear-resistant corrosion resistance,high temperature resistance and other special characteristics.The customers response that this material has a good hardenability,heat treatment quality is stable,and also with a uniform hardness.