Mold steels are made of high carbon steels (either carbon or alloy) with high hardness, strength, and wear resistance as well as heat resistance. The carbon steels are comprised of carefully selected alloying elements and stable carbides. The chemicals inside the alloy should be adjusted to improve the character of the material.

Then the carbon steels will be processed with special melting techniques to give the mold steel a very high micro-cleanliness level and homogeneous microstructure. These are two extremely important properties of the steel’s texturing characteristics.

Finally, the steel will be polished by removing the softer layer of steel with foreign particles, and gases.

The chemical composition and the manufacturing processing will determine the mold steel’s performance in given working industry. For example, roll neck bearings will work under high load, temperature and speed. The bearing steel should have higher resistance of wear and heat. Top bearing manufacturers, like SKF, FAG, TIMKEN and ESG Bearing are using mold steel to make their rolling mill bearings. Thus their bearings can work in the toughest environments.