cr12 mold steel performance requirements

Performance requirements.

Hardness Hardness is the main technical specification of a die steel. If the mold wants to keep the shape and size unchanged under high stress, it must have a high enough hardness. Cold work of mold steel at room temperature general hardness in HRC60 or so, and hot work mold steel according to its working conditions generally required in HRC40 ~ HRC40 ~ 55 between. In a certain range of hardness, the same steel hardness and deformation resistance is proportional; but different composition, different organization of the steel, hardness value is the same, its resistance to plastic deformation may have significant differences.

When working at high temperatures, hot working dies must maintain their structure and properties stable in order to maintain a sufficiently high hardness, which is called red hardness. In general, carbon and low-alloy tool steels can be maintained in the temperature range of 180 to 250°C, while chromium-molybdenum hot work tool steels can be maintained in the temperature range of 550 to 600°C. The red hardness of the steel depends mainly on its chemical composition and heat treatment process.

Compression yield strength and compression bending strength in the process of mold use, there are often high strength pressure and bending. So the mold material requires a certain compressive and bending strength. In many cases, the conditions of the cold work die steel compression and bending tests are close to the actual working conditions of the die (e.g., the measured die steel compression yield strength is consistent with the deformation force of the punch during operation). Another advantage of the bending test is that the strain values are large and can sensitively reflect the differences in deformation resistance between different steel grades and under different heat treatment and microstructure conditions.

104 alloy die steel

Request a drawing of the mold structure.

Die billets P20 (28~32 HRC) can be made of mild steel or aluminum. (1040 steel)

Internal die sets can be aluminum, mild steel or other approved metals.

Other requirements will be as needed.