Forgings are generally made through forging, cutting, heat treatment and other processes. In order to ensure the manufacturing quality of the mold and reduce production costs, the material should have good forgeability, cutting processability, hardenability, hardenability and grindability; it should also have low oxidation, decarburization sensitivity and quenching deformation and cracking sensitivity.

1. Forgeability

It has low resistance to hot forging deformation, good plasticity, wide forging temperature range, low tendency of forging cracks, cold cracks and precipitation of network carbides.

2. Annealing process

The spheroidizing annealing temperature range is wide, the annealing hardness is low and the fluctuation range is small, and the spheroidization rate is high.

3. Cutting processability

The cutting amount is large, the tool loss is low, and the processing surface roughness is low.

4. Oxidation and decarburization sensitivity

When heated at high temperature, it has good oxidation resistance, slow decarburization speed, is insensitive to heating medium, and has a low tendency to produce pitting.

5. Hardenability

After quenching, it has uniform and high surface hardness.

6. Hardenability

A deeper hardened layer can be obtained after quenching, and the hardening effect can be achieved with moderate quenching.

7. Tendency of deformation and cracking during quenching

The volume change of conventional quenching is small, the shape warping and distortion are slight, and the tendency of abnormal deformation is low. The sensitivity of conventional quenching cracking is low, and it is insensitive to quenching temperature and workpiece shape.

8. Grinding performance

The grinding wheel has low relative loss, no burn limit, large grinding volume, is insensitive to grinding wheel quality and cooling conditions, and is not easy to wear and damage and produce grinding cracks.