At present, the mobile phone case (mobile phone protective cover) we use is mainly made of plastic and silica gel. Of course, some people like personalized needs, so a small number of mobile phone cases are metal, and the corresponding molds are plastic mold steel and cold working mold steel.

在选择材料的时候，我们要明白手机壳产品对模具的一般性要求：

When selecting materials, we should first understand the general requirements of mobile phone case products for molds:

1.在使用寿命上的要求；

1. Requirements on service life;

2.在光洁度也就是模具钢的抛光性上的要求。

2. Requirements for finish, that is, the polishing of die steel.

手机壳模具主要用什么模具钢材？

What kind of mould steel is mainly used for the mould of mobile phone case?

手机壳模具

Mobile phone case mould

因此，在选择模具钢材质方面是比较开放的，主要看产品方对手机壳质量的要求如何。

Therefore, the selection of die steel material is relatively open, mainly depending on the quality requirements of the product side for the mobile phone case.

所以，一般的手机塑料壳的话用45#、P20这种塑料模具钢就可以，相对比较便宜，也基本满足要求，P20是目前用到广泛的一个品种，如果是铁的一般会用到Cr12、Cr12MoV等冷作模具钢。

Therefore, for the general plastic case of mobile phone, it is OK to use 45#, P20 plastic die steel. The price is relatively cheap and basically meets the requirements. P20 is a widely used variety at present. If it is iron, Cr12, Cr12MoV and other cold working die steel will be used.

当然，有的产品方对质量要求比较高，毕竟手机机壳是比较精密的东西，所以塑料模会采用718，或者S136、2344热处理到HRC48-52度左右。冲压会用D2、SKD11。

Of course, some manufacturers have high quality requirements. After all, the mobile phone shell is a relatively precise thing, so the plastic mold will be heat treated to hrc48-52 degrees by 718 or S136 and 2344. D2 and SKD11 will be used for stamping.

手机壳模具主要用什么模具钢材？

What kind of mould steel is mainly used for the mould of mobile phone case?

手机壳模具

Mobile phone case mould

而有的厂商会用NAK80，不用热处理，并且抛光性能比较理想。

Some manufacturers will use NAK80 without heat treatment, and the polishing performance is ideal.

总之，手机壳模具总体来说用一般的模具钢材就行，除非有比较高的要求，具体看需求而定。

In short, generally speaking, the mold of mobile phone case is made of general mold steel, unless there are relatively high requirements, which depends on the demand.