After quenching, 4Cr 13 has higher hardness and better corrosion resistance than 3Cr 13. The quenching hardness is generally above HRC48. Steel is delivered in an annealed state. Forging: Oil-quenched die steel has certain crack sensitivity, so it is not suitable for rapid heating during forging. It is best to preheat to 650-750 degrees. The heating temperature for forging is1130-1150 degrees, and the final forging temperature should be greater than 800-850 degrees. The upper limit temperature should be taken when forging ingots. Take the lower limit temperature when forging the blank.
Use:
Industry: It is suitable for EDM grinding, and it is suitable for making the mold core cavity of injection mold with high mirror surface and high precision. After heat treatment, it has high hardness and toughness, and can also be used as stamping die accessories, templates and so on. It is required to clamp the fixture mold on the surface of the product. Suitable for high-temperature rust prevention and corrosion prevention occasions.
Civil use: it can be used to make dinner knives and outdoor knives.