Commonly used mould materials.

Sweden: S136 die steel, 8407 die steel, DF-2 die steel, 718 die steel.

America: 420 die steel, H13 die steel, P20 die steel, D2 die steel.

Japan: SKD61 die steel, DC53 die steel, NAK80 die steel, SKD11 die steel, SKH-9 high-speed steel.

Germany: die steel 1.2379, die steel 1.2083, die steel 1.2316, die steel 1.2344.

The injection materials used in the mold have a great influence on the choice of steel for the mold. Adding other modifiers such as enhancers or glass fibers can cause great damage to the mold, and should be considered comprehensively when choosing materials. Strong acidic plastics are PVC, POM, PBT, weak acidic plastics are PC, PP, PMMA, PA. for corrosive plastics, generally use S136, 1.2316, 420 and other steel, for less corrosive plastics, you can use S136, 1.2316, 420, SKD61, NAK80, PAK90, 718, etc. Products also have a great impact on the choice of mold materials, for transparent parts and products that require mirror polishing, additional materials are S136, 1.2316, 718, NAK80, PAK90, 420, high requirements for transparency mold S136 then choose 420. If only to meet the product requirements, do not consider the price and cost, can not do a good designer. Mold production cost is also of paramount importance. Compared to 1.2316, imported S136 and 1.2316 difference of tens of dollars a kilogram. (Imported mold steel)