Plastic mold steel is a kind of mold steel used for plastic production. Mold steel is the main material of plastic mold. The development of mold steel promotes the development of industrial products to the direction of advanced, diversified, personalized and high added value. All countries in the world count the output of die steel into alloy tool steel, which accounts for about 70-80% of alloy tool steel.

塑料模具钢一般可分为时效硬化型塑料模具钢(含镜面模具钢)、耐蚀型塑料模具钢、渗碳型塑料模具钢、预硬型埋料模具钢(含易切削钢)、调质型塑料模具钢和淬硬型塑料模具钢六个大类。应用较多的是时效硬化型塑料模具钢、渗碳型塑料模具钢和预硬型塑料模具钢

Generally, plastic mold steel can be divided into six categories: age hardening plastic mold steel (including mirror mold steel), corrosion-resistant plastic mold steel, carburizing plastic mold steel, pre hardened embedded mold steel (including free cutting steel), Quenched and tempered plastic mold steel and hardened plastic mold steel. Age hardening plastic die steel, carburizing plastic die steel and pre hardening plastic die steel are widely used

1.塑料模具用钢涵盖广泛，从普通钢材到专用钢材都有。这在塑料模具初期更加明显，如今已日趋正规和。专门用钢已自成体系，模具用钢的化学成分和合金工具钢的基本相同，但其冶金质量更高，加工精良，对热处理有利

1. Plastic mold steel covers a wide range, from ordinary steel to special steel. This is more obvious in the early days of plastic mold, and now it has become more and more formal and advanced. The chemical composition of die steel is basically the same as that of alloy tool steel, but it has higher metallurgical quality and better processing, which is beneficial to heat treatment

2.塑料模具钢性能要求严格，热处理难度大。

2. The performance requirements of plastic mold steel are strict, and the heat treatment is difficult.

3.为避免模具零件在强韧化过程中的变形或其他热处理问题，模具钢以预硬化形式供应市场已较普遍。

3. In order to avoid the deformation or other heat treatment problems of die parts in the process of strengthening and toughening, it is common for die steel to be supplied to the market in the form of pre hardening.

4.以石化产品为原料的塑料制品，某些度不同的腐蚀性，所以耐蚀钢应用也较多。

4. Plastic products with petrochemical products as raw materials have different degrees of corrosion, so corrosion-resistant steel is widely used.

5.配合预硬化钢、非调质刚的应用，易切削性也是塑料模具钢的特点

5. With the application of pre hardened steel and non quenched and tempered steel, free cutting is also the characteristic of plastic mold steel