Application of SKD61 steel forms

SKD61 steel is a steel label named after Japanese standards (JIS - Japan Industrial Standard). SKD61 steel is widely used in industry, heavily applied in making hot stamping dies.
SKD61 steel comes in two forms: SKD61 steel plate and SKD61 solid steel. In this article, we will learn together about the applications of SKD61 steel types.
1. In the form of SKD61 steel plate
a. Specification of steel SKD61 plate
- Thickness: 5 mm - 315 mm;
- Width: 560 mm;
- Length: 3000 mm.

                                                Application of SKD61 steel plates - sheets
b. Application of SKD61 steel plates
SKD61 steel in sheets is often used as a mold for industry especially pressure casting for aluminum and zinc, pressure casting, etc.
- Mold characteristics: Mold is made up of many components, each of which has its own function. In high pressure casting, metal molds are very expensive, so the functions must be carefully calculated towards the structure without waste. In addition, efforts should be made to reduce mold costs by promoting standardization of component parts, improving the interchangeability of components, and reducing the number of components by instant fabrication. , using standard components sold by mold manufacturing companies on the market.
- Mold requirements: While working, the pressure die surface must be in contact with molten metal, causing itself to be heated. Mold temperature can be up to 5000oC - 60000C. Therefore, pressure die casting steel has the following requirements:
+ High thermal stability means the ability to ensure the working surface of the mold is not deformed plastic, this feature can be evaluated by the limit of the flow limit at high temperatures or hardness at high temperatures not less than 45HRC - 50HRC.
+ High toughness: Heat fatigue of steel is closely related to its toughness. Normally required at normal temperature, the toughness of steel is not less than 35J / cm2, at working temperature toughness is not less than 50J / cm2.
+ High heat fatigue: Usually the steel has the higher heat resistance and toughness, the smaller the coefficient of thermal expansion, the higher the heat fatigue strength.
+ Good oxidation and anti-corrosion ability: Mold steel is characterized by the strong chemical resistance of the carbides, but in order to obtain high toughness, high thermal fatigue resistance, the lower the carbon content is desired. the better. The carbon content in steel cannot be too high, mostly 0.3% - 0.5%. If the carbon content is lower then the total alloy element content needs to be higher.
- Suitable embryo material: SKD61 steel has harmonious combination of chemical components, offering high heat resistance, high toughness, high heat fatigue and oxidation and corrosion resistance. good. Therefore, SKD61 steel is a suitable material to make workpieces for pressure casting molds.
2. Solid steel SKD61 form
a. Specification of solid round steel SKD61
- Diameter: ø13 mm - ø310 mm.
- Length: 6000 mm.

Application of SKD61 steel forms - solid round shapes
b. Application of solid round SKD61 steels
Solid steel SKD61 has the same effect as the sheet. Depending on the demand, this form will be applied in different forms such as rolling mill, aluminum extrusion mold, etc.
- Mold characteristics: Aluminum extrusion molds are one of the major equipment in the production of shaped aluminum. Aluminum mold is a mechanical structure composed of many complex parts, made of hard and durable material.
- Mold requirements: Mold requirements are to withstand the high pressure of the press without cracking. There are 3 basic types of molds: solid, porhole and spider molds for hollow rods.
- Suitable preform material: SKD61 steel is suitable for making aluminum extrusion molds because of its high heat resistance when working in temperatures of 4300oC - 4500oC and high thermal elasticity.
 Hopefully the above information will solve the problems that readers are having. If you want more detailed advice on the type of industrial steel, readers can contact 0332 91 61 61 or chat online with us.
Sevit is pleased to answer all questions from readers!