HPM75 non-magnetic steel is generally 70Mn15Cr2Al3V2WMo for short. Also called 70Mn15. HPM75 non-magnetic steel hardness 40-44HRC.
It is a high Mo-V non-magnetic steel. The steel can maintain stable austenite in various states, has a very low permeability, high hardness, strength, and good wear resistance.
Due to the cold hardening phenomenon of high manganese steel, it is difficult to cut. The high temperature annealing process can change the particle size, shape and distribution of carbide, so as to significantly improve the cutting performance of steel. Using gas soft oxidation process, further improve the surface hardness of steel, increase wear resistance, significantly improve the service life of parts.
HPM75 non-magnetic steel chemical composition
| C | Cr | Mo | W | lv |
| 0.65～0.75 | 2.0～2.5 | 0.5～0.8 | 0.5～0.8 | 2.7～3.3 |
| V | Si | Mn | 硫S | P |
| 1.5～2.0 | ≤0.80 | 14.5～16.0 | ≤0.03 | ≤0.04 |
HPM75 Non-magnetic steel Non-magnetic steel use
The steel is suitable for the manufacture of non-magnetic molds, non-magnetic bearings and other structural parts that require no magnetic induction in strong magnetic fields. In addition, because the steel also has high high temperature strength and hardness, it can also be used to manufacture hot work molds used below 700 ° C ~ 800 ° C.
