Product Description
  • SCM440 has good hardness and strength, and is a high-strength alloy steel.
  • With proper heat treatment, high hardness and good wear resistance can be obtained, making it suitable for manufacturing wear-resistant and high-load parts.
  • It has good hardenability, and the microstructure after heat treatment is uniform and fine, which improves the strength and toughness of the material.
Detailed introduction

SKD61 is a hot tool steel commonly used in the manufacture of tools such as molds, die-casting molds, and plastic molds.

SACM645 main components percentage
Carbon (C) 0.32-0.42%
Silicon (Si) 0.80-1.20%
Manganese (Mn) ≤ 0.50%
Phosphorus (P) ≤ 0.030%
Sulfur (S) ≤ 0.030%
Chromium (Cr) 4.75-5.50%
Molybdenum (Mo) 1.10-1.75%
Cobalt (Co) ≤ 1.00%
Iron (Fe) The remaining part
Country Numbers
nation Steel grade
Japan JIS JIS G 4404 SKD61
JIS SKD61
American AISI / SAE ASTM A681
AISI H13
China GB GB/T 1299-2000
Europe EN EN ISO 4957 1.2344
EN 10088-3 X40CrMoV5-1
German DIN DIN 1.2344

The standards and grades of chemical composition vary slightly from country to country. The information in the table above is for reference only. For detailed ingredient content, please refer to the databases of each country.

Main application scope

SKD61 is mainly used in mold manufacturing under high-temperature working conditions, and its applications include:

  • Plastic molds: SKD61 is commonly used to produce injection molding molds, compression molding molds and blow molding molds, etc., to cope with the plastic molding process under high temperature and high pressure.
  • Die casting molds: Due to its good heat resistance and wear resistance, SKD61 is suitable for manufacturing die casting molds for metals such as zinc alloy and aluminum alloy.
  • Hot work dies: In the field of hot work dies, SKD61 is often used to manufacture hot work dies, hot work die cores and die inserts, etc., for metal forming and processing at high temperatures.
  • Plastic injection molding: SKD61 is also commonly used in the manufacture of plastic injection molding molds, such as mold cores and mold cavities of plastic injection molding molds.
  • Stamping dies: SKD61 can also be used to manufacture stamping dies, such as punches, die plates and die inserts, to cope with the high temperature and high pressure processing of stamped metals.

In summary, SKD61 is widely used in the mold manufacturing field due to its excellent heat resistance, wear resistance and machinability.

Application