1.This material (chemical name: 3Cr2MnNiMo) is plastic mould steel, pre- hardened to 30-35HRC, and easy machining, deformation;
2.EFER On ESR steel echibitws a high purity, is suited for spark erosion
and mirror-like production;
3.There is uniform hardness over cross-section of large size;
4.Cab be hardened again to 40HRC;
5.Use for large size and long life plastic mould.
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