无磁模具钢HPM75、7Mn15Cr2Al3V2WMo、5Cr21、Non magnetic mold steel、non-mag

Non magnetic steel for mold making：7Mn15Cr2Al3V2WMo 、7Mn15、70Mn、5Cr21、50Mn、5Cr21Mn9Ni4N、HPM75、DG60 ... Low magnetic permeability, high hardness, wear resistance, corrosion resistance, and lower cost, making it cheaper. 694992782@