Powder metallurgy molds have high requirements for wear resistance. If the mold has insufficient wear resistance, it will easily be embossed; the mold must also have good toughness to prevent the mold from cracking.

Common failure modes of powder metallurgy molds: mold cracking, scratching and wear resistance.

Commonly used materials for powder metallurgy molds: (The following is just a list of commonly used materials, and the specific material selection should be based on actual working conditions)

Alloy steel: Cr12MoV, SKD11, DC53, UINPM

High speed steel: M2, SKH9, SKH51…

Powder high-speed steel: PM23, PMX5, UINPM…

Tungsten steel: YG8, YG20, YG15, GT35…

Powder metallurgy molds have high requirements for resistance to friction and wear, otherwise the molds will be easily scratched. In order to solve the problem of mold scratching, people generally use cold work mold steel with good wear resistance, such as dc53 mold steel. The wear resistance of DC53 mold steel is sufficient, but its relative toughness is insufficient. Under certain working conditions, the mold is prone to cracking. Lowering the hardness of DC53 to HRC56-58 will not improve much.

Steelmaking process: Today's mold steel adopts machine-made or continuous casting and rolling mass production methods. For DC53 with high alloy content, there is a lack of forging ratio, and the material is prone to structural segregation, carbide aggregation, and uneven structural mold. Steel, the risk of cracking increases during use.

Heat treatment process: In order to reduce costs, the heat treatment process is also simplified, resulting in a discount on various performance indicators of mold steel. Therefore, powder metallurgy molds cannot escape the fate of cracking.

SDWST is not just a supplier of high-quality mold materials with quality assurance. With our many years of industry experience, we can provide customers with better material selection solutions and technical support to make your products more market competitive.

Material selection for powder metallurgy molds should be based on actual working conditions and based on material failure analysis, we will recommend suitable mold materials for you. In terms of mold design, etc., our company can also provide you with some suggestions based on many years of industry experience.