... material The high chrome, high manganese steel 2,Application of cement, high manganese wear-resistant hammer1,material The high chrome, high manganese steel ... , silicon, rare earth, vanadium, titanium, molybdenum, nickel, boron, etc DuoZhong precious rare metal, use the electric stove refining ... is handled and become. 4, composite hammer head high manganese steel service life is four times the hammer ...