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HMD5 (fire hardening steel)

Mrs. chen June 7, 2023

HMD5 is a mold material that is easy to quench with burners, has a uniformly high hardness, and has excellent machinability. It also has the characteristics of high toughness and easy welding repair.


HMD5 features:

A wide range of quenching temperatures.

Even the use of burner heating is not easy to appear uneven hardness, so that the frame hardware is stable.

- Quenching cooling can be retained for air cooling.

High hardenability, after heating with a burner, direct air cooling can be fully quenched.

- Small quenching distortion.

For automotive molds, the frame hardware surface can be used without modification.

- Excellent toughness.

It has excellent toughness and almost no risk of chipping or cracking during use.

- Good wear resistance.

HMD5 has the same wear resistance as SKS3.

- Good machinability.

HMD5 has the same processability as SK120.

· Easy to repair.

Even if you build after the framework hardware, you don't have to worry about cracking.

HMD5 Usage:

· Plate mold

Trimming mold

Punching mold

Bending die

Drawing mold

Equal cold forming die.

Frame hardening heating temperature: 940-1100℃


Heat treatment conditions for quenching

Quenching: 850℃ ~ 900℃ oil cooling

Tempering: 150℃ ~ 200℃


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