... industry , cement ,petroleum etc. 3)Material: high manganese steel : Mn13% , Mn18%, Mn24% High chromium iron : Cr20 , Cr24 up Carbon Steel ... good quality crusher spare parts such as jaw plates, blow bars, liner plates, hammers, mantles, concaves, crusher backing, wedges ... machinery and equipment. We are able to produce high manganese steel, high chromium steel, alloy steel, cast iron, stainless steel ...