HPM75 non-magnetic steel to increase hardness process
HPM75 is a non-magnetic, high-hardness, easy-cutting plastic mold steel produced through a special melting process. It is a non-magnetic, high-strength austenitic non-magnetic mold steel among HPM series steels. It can maintain stable austenite in various states and has very low magnetic permeability. The high hardness, wear resistance, corrosion resistance and non-magnetic properties of HPM75 non-magnetic steel are comparable to many mold properties such as stainless steel SUS304; therefore, it is suitable for mold products that require high corrosion resistance and wear resistance. The use of gas nitrocarburizing heat treatment can further improve the surface hardness and wear resistance, thereby increasing the service life of the mold. HPM75 non-magnetic steel is prone to work hardening, and low-speed machining is recommended.

Chemical composition of HPM75 non-magnetic steel round steel
HPM75 | C | Si | Mn | Cr | Mo | W | V | Al |
HPM75 | 0.65-0.75 | ≤0.80 | 14.5-16.0 | 2.0-2.5 | 0.5-0.8 | 0.5-0.8 | 1.5-2.0 | 2.7-3.3 |
Application of HPM75 non-magnetic steel plate
HPM75 non-magnetic steel plate is suitable for making plastic molds and rubber molds that require high corrosion resistance and high wear resistance;
HPM75 non-magnetic steel module is suitable for making plastic molds for semiconductor IC sealing and mold accessories that require corrosion resistance and rust prevention;
HPM75 non-magnetic steel round steel is suitable for making non-magnetic molds in the electronics industry;
HPM75 non-magnetic steel round bar is suitable for industrial hot work molds at 700-800 °C;
HPM75 non-magnetic steel is suitable for non-magnetic cold work molds and plastic plastic molds;
HPM75 non-magnetic steel sheet is suitable for magnetic plastic and magnetic field forming dies;
HPM75 non-magnetic steel material is suitable for wear-resistant non-magnetic tools;
HPM75 non-magnetic steel small round rod is suitable for mirror polishing mould, dust cover, TV filter plate, cosmetic box, etc.;
HPM75 non-magnetic steel material is suitable for precision corrugated processing molds, office automation equipment, and auto parts;
HPM75 non-magnetic steel rod is suitable for electric discharge machining molds.
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