Cold Work Die Steel - D2 Steel

It is well known that cold work die steel refers to a die steel used to deform or shape a metal in a cold state. Cold work die steel is widely used in our daily life and there are many tools that need to be used. Here I will talk about one of the models in the cold work die steel - D2 steel.
D2 is a tool steel. It is a kind of semi-stainless steel. D2 steel has good wear resistance and moderate toughness. The disadvantage is that the corrosion resistance is slightly insufficient, which is a kind of steel suitable for practical use.
D2 steel is highly wear-resistant, micro-deformed cold work die steel, wind hard tool steel.D2 steel can be used to make cold work die steel with a large section, complex shape, high impact force and high wear resistance, such as silicon steel sheet die, cold cut scissors, trimming die, etc.D2 internationally widely used high carbon high chromium cold work die steel, is Leysite steel with high hardenability, hardenability and high wear resistance; high temperature oxidation resistance, anti-corrosion after quenching and polishing Good ability, small heat treatment deformation.

The carbon mass fraction of the steel is as high as 1.5%, the mass fraction of chromium is as high as 11.5%, and the hardness after heat treatment is up to 60HRC, but the relative ductility, toughness and rust resistance are weak, and the surface of the steel is also difficult to be mirror-polished. With the development of high-precision, high-efficiency and multi-variety cold stamping products, mold steels are required to have good wear resistance and toughness. Compared with Cr12MoV steel, the steel adds Mo and V to the chemical composition, which changes the foundry organization of the steel, improves the morphology of the vegetable body, and has better toughness and wear resistance than Cr12MoV steel, which improves the use of the mold. life. Since the steel has higher yield point and plastic deformation resistance than Cr12MoV steel, its forging property and thermoplastic formability are slightly worse than Cr12MoV steel.
It suitable for complex and deformable tool steel, high wear resistance and long life all kinds of cold stamping die and cold shearing edge, crepe plate; cold extrusion forming, drawing die, beer stainless steel sheet and high hardness material blanking Mode and so on.
Let’s talk about its scope of application.
1) For the refrigerator compressor rear cover drawing die, quenching hardness 56~58HRC.
2) In order to improve the service life of the flat steel rolled material of D2 cold work die, the method of adding rare earth is used to improve the wear resistance and impact toughness of the steel, so as to improve the service life of the flat die flat steel. .
3) Since the V and Mo contents in D2 steel are higher than that of Cr12MoV steel, it has better comprehensive performance, and the traditional Cr12MoV steel will be gradually replaced.
4) The rolling wheel made of D2 steel and the cold stamping die from the Taiwan adjusting plate can increase the service life by 5-6 times compared with Cr12MoV steel.