... 0.25 Mechanical PropertyTensile Strength195~1130Yield Strength175~980Extension6%~24%Reduction of cross-section30%~70%Impact absorbing energy31~71Hardness ( ... , vehicle, aircraft, missile,weapons,railways,bridge,pressure vessel, machine tool,gears in gearbox, gear shaft, cam, worm, claw ... And in shapes, we provide steel round bar, steel square bar,steel flat bar, steel plate, steel sheet, steel coil ...