This product has good tenacity, strong bearing to whet the dint, bear the oil, anti- earthquake etc. characteristics. It is applicable to manufacture the spare parts of bearing whetting the dint, the construction piece of spreading to move, the spare parts of home appliances, the spare parts of car's manufacturing, the spare parts of spinning's machine, the chemical engineering equipments, the spare parts of insulating electric appliances. Such as the turbine, wheel gear, bearings, leaf's round, leaf's slice, silk pole, high pressure washer, completely seal washer, nut, shuttle, sleeve and bush linker. This product uses widely, therefore it is good material on behalf the steels.