Abstract: The dic core in diamond drawing die made of binder containing Ti has the superior combination of both mechanically clamping and binding diamond. This kind of binder increases the tightness of embedded diamond in the die core. The die has a long performance duration and overcomes the disadvantages of traditional brass binder which is only capable of clamring diamond and liable to loose and crack. The performance duration of the die was prolonged, by 2-4 times under same working conditions, hence remarkable economic advantages have been obtained.