In order to meet the needs of high hardness and wear resistance, cold work die steel is usually high carbon in composition. If in order to improve the impact resistance of the die, it is necessary to increase the toughness, medium carbon steel can be selected. At this time, hot work die steel can be used instead. When alloy elements are added into cold working die steel, the main purpose is to improve hardenability and wear resistance. For the die with high wear resistance, carbide forming elements are often added. The following several times on the cold working die steel process performance requirements are described:

冷作模具钢的工艺性能，直接关系到模具的制造周期及制造成本。对冷作模具钢的工艺性能要求，主要有锻造工艺性、切削工艺性、热处理工艺性等。

The technological performance of cold working die steel is directly related to the manufacturing cycle and cost of the die. The technological requirements for cold working die steel mainly include forging technology, cutting technology and heat treatment technology.

1)锻造工艺性

1) Forging technology

锻造不仅减少了模具材料的机械加工余量，节约钢材，而且改善模具材料的内部缺陷，如碳化物偏析、减少有害杂质、改善钢的组织状态等。

Forging not only reduces the machining allowance of die material and saves steel, but also improves the internal defects of die material, such as carbide segregation, reducing harmful impurities and improving the microstructure of steel.

为了获得良好的锻造质量，对可锻性的要求是热锻变形抗力低、塑性好、锻造温度范围宽，锻裂、冷裂及析出网状碳化物倾向小。

In order to obtain good forging quality, the requirements of malleability are low hot forging deformation resistance, good plasticity, wide forging temperature range, small tendency of forging crack, cold crack and network carbide precipitation.

2)切削工艺性

2) Cutting technology

磨损小以及加工后模具表面光洁。冷作模具钢主要属于过共析钢和莱氏体钢，大多数切削加工都较困难，为了获得良好的切削加工性，需要正确进行热处理，对于表面质量要求较高的模具可选用含S、Ca等元素的易切削模具钢。

The wear is small and the die surface is smooth after machining. Cold working die steel mainly belongs to hypereutectoid steel and ledeburite steel, most of which are difficult to be machined. In order to obtain good machinability, proper heat treatment is needed. Free cutting die steel containing s, Ca and other elements can be selected for dies with high surface quality requirements.

3)热处理工艺性

3) Heat treatment processability

热处理工艺性主要包括：淬透性、淬硬性、耐回火性、过热敏感性、氧化脱碳倾向、淬火变形和开裂倾向等。

Heat treatment processability mainly includes: hardenability, hardenability, re ignition resistance, overheating sensitivity, oxidation decarburization tendency, quenching deformation and cracking tendency, etc.