Speaking of this kind of die steel, we know that it belongs to the category of steel. As the name implies, the main purpose of die steel is to manufacture dies. Including cold stamping die, hot forging die, die casting die, etc. In this way, since this kind of steel is so widely used, what is the hardness of die steel and the comparison of related types? The following small series will open the knowledge acceptance mode for you.

The hardness of die steel is also related to the technological properties of the material, such as cold formability, machinability and weldability, which can be used as a reference for formulating the processing technology. Therefore, hardness testing is the most commonly used testing method in actual production. In addition, hardness is measured on hardness testing equipment. The hardness testing equipment is simple, and the operation is quick and convenient. It can be directly tested on parts or tools without damaging the workpiece, and the approximate tensile strength and wear resistance of the material can be estimated according to the measured hardness value.

For example, in Glitz, Germany, the following is a comparison of steel hardness under its series.

1, steel material number: XPM

Hardness: Pre-hardening? HRC38-42

Characteristics of steel: uniform hardness, better machinability, thermal conductivity, polishing, etching and weldability than ordinary AISI? P20 wins.

General purpose: automobile bumper, instrument mold, copier/printer, shell mold and other large plastic molds.

Heat treatment: Pre-hardened materials do not need to be heated.

2. Steel material number: XPM? ESR

Hardness: Pre-hardening? HRC 36-42 ppm

Steel characteristics: ESR version, the inclusion is controlled at a low level, the segregation degree is low, the polishing effect is effectively improved, and the material anisotropy is reduced.

General use: suitable for large plastic molds with high surface requirements, automobile lights, rearview mirrors, lamps, interior decoration molds, televisions, photocopier/printer housings.

Heat treatment: Pre-hardened materials do not need to be heated.

3. Steel material number: SWG2343? Salvador

Hardness: annealed about HB225.

Characteristics of steel: uniform material and good comprehensive performance, which can be used as high-finish plastic mold.

General purpose: suitable for aluminum, magnesium and zinc alloy die casting dies and high gloss plastic hard dies.

Heat treatment: quenching: 990- 1030℃ (oil cooling or air cooling) tempering:? 530-680℃

Another example is Datong cold-worked steel,

Steel material number: DC53

Hardness: annealed about HB255.

Steel characteristics: high toughness chromium steel, quenching and tempering at high temperature can reach 62HRC, which is especially beneficial to heat treatment.

Do WEDM to reduce bottom cracking.

General purpose: blanking die, cold forming die, drawing die, forming roller, punch.

Heat treatment: quenching: 1020- 1040℃ (air cooling or air cooling) tempering:? 180-550℃

Well, the hardness comparison table of die steel and ordinary die steel is as mentioned above. Generally speaking, Bian Xiao suggests that you consult according to the actual material of the steel in your hand. Different steels have different characteristics. In addition, if you have the conditions, you can also go to the steel market for consultation in person. I hope Bian Xiao's answer will help you.

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