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Hongxin - Model JIS SKD6 - Hot Worked Mold Steel for High-Temperature Tooling and Engineering
JIS SKD6 is a versatile hot work tool steel with 5% chromium, known for its superior impact toughness. Suitable for various industrial applications, including hot work tooling, aluminum and non-ferrous metal processing, plastic molding, and high-pressure die casting, this material excels in high-temperature environments. The steel is categorized under group H in the AISI classification system and conforms to ASTM A681 standards. It is a deep-hardening, air-hardening steel that demonstrates minimal size change during heat treatment. Additionally, JIS SKD6 offers excellent resistance to thermal fatigue cracking and thermal shock, making it robust under both normal and water-cooled operating conditions. With mechanical properties influenced by different heat treatments—such as normalization, quenching, and tempering—the steel's performance can be finely tuned for specific needs. Tests for its mechanical properties include tensile strength, yield strength, impact value, hardness, and grain size. Available in various forms and sizes, the product is delivered based on customer requirements, following rigorous quality assurance protocols.JIS SKD6 material is a versatile and reliable choice for a wide range of industrial applications, particularly in hot work and high-temperature environments. Its excellent properties make it a preferred material for tooling and components that require high performance and durability.Hot Work Tooling, Aluminum and Non-Ferrous Metal Processing,Plastic Molding,High-Pressure Die Casting and General Engineering Applications are all its application.
- HONGXIN
- DAYE
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- JIS SKD6 introduction
JIS SKD6 tool steel is a 5% chromium hot work tool steel that is represented by its excellent impact toughness. Chromium hot-work tool steels are designated as group H steels according to the AISI classification system, and specified in ASTM A681standard. The most commonly used chromium hot-work steels are JIS SKD6 tool steel, H12 tool steel, and H13 steel, within the series from H1 to H19.
JIS SKD6 tool steel is a deep-hardening, air-hardening steel and JIS SKD6 alloy steel could be deep hardened by heat treatment and air-quenching. That gives minimal size change during heat treatment. JIS SKD6 hot work steel also has super resistance to thermal fatigue cracking and superb resistance to gross cracking and thermal shock when water cooled in service.
- JIS SKD6 steel mechanical properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as normalized, tempered, QT. If you want to know the properties, kindly contact the salesman.
- Heat treatment
Annealing
Slowly heat to 843 – 898(1550-1650 F) then slowly Cool to 538(1000) in heat treatment furnace. Then frosty in make public. After annealing hardness HBS: 235 Max
Hardening
JIS SKD 6 steel having enormously high hardenability and should be hardened by cooling in yet appearance. The use of a salt bath or controlled mood furnace is desirable to minimize decarburization, and if not user-simple, pack hardening in spent arena coke is suggested. The temperature employed is usually 1800-1850F, depending upon size section.
Quenching
Quenching temperature / ℃ | salt bath furnace: 996
Quenching temperature / ℃ | controlled atmosphere furnace: 1010
The heat preservation time/min: 5 ~ 15
Quenching medium: air cooling .
Tempering
Tempering temperature / : 552
After tempering hardness HRC or future: 52
- Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.