High Manganese Steel Jaw Plate 1.Fixed,swing,toggle ... ,and wearing resistance !We add the Manganese Elements in the Steel ,It is of high hardness and have ... , metallurgy, chemical industry , cement ,petroleum etc. 3)Material: high manganese steel : Mn13% , Mn18%, Mn24% High chromium iron : Cr20 , ... High chrome blow bar Middle Alloy steel blow bar Supper high manganese steel blow bar High chrome blow bar ...