The products are used in brake and clutch of automobile,motorcycle,locamotive and aeroplane as raw material with excellent properties of stabillity,low rate of friction loss and good heating conductivity.So far no Substitutve material has been found to match its properties. Chemicals(%): C: 0.07-0.12 % Si: 0.10%max Mn: 1.25%max S: 0.04%max P: 0.10%max