Hot work tool steels are a group of alloy tool steels that enable the shaping of iron and non-ferrous materials through various methods such as injection, extrusion, forging, and cutting under high-temperature conditions (200-600°C). The main properties of hot work tool steels include high tempering resistance, high-temperature strength, resistance to thermal shock, and suitable hot ductility. These steels are widely used in modern manufacturing and mold industries for shaping metal-based raw materials at high temperatures.
Examples:
- 2344 (X40CrMoV51)
- 2343 (X38CrMoV51)
- 2367 (X38CrMoV5-3)
- 2714 (55NiCrMoV7)
Cold Work Tool Steels
Cold work tool steels are steels that contain carbon in the range of 0.3% to 2.5%, and they include alloying elements such as chromium, vanadium, molybdenum, and tungsten, as well as manganese and nickel. They have high initial hardness, which decreases rapidly when the temperature exceeds 200°C. Therefore, they are used in machining processes for workpieces operating at approximately 200°C and below, including both chip-removing and non-chip-removing operations. They are commonly used in drilling, cutting tools, forming, deep drawing, powder pressing, cold forging, etc.
Examples of Cold Work Tool Steels:
- 1.2080 (X210Cr12)
- 1.2379 (X155CrMoV12)
- 1.2842 (9MnCrV8)
- 1.2767 (X45CrNiMo4)
- 1.2363 (X100CrMoV5)
- 1.2550 (60WCrV8)
Plastic Mould Steel
Plastic mould steels are tool steels used for shaping plastic materials. Unlike other tool steels, they have high corrosion resistance, polishability, and patterning capability, containing alloying elements such as chromium, manganese, molybdenum, nickel, vanadium, and aluminum. They are commonly used in shaping plastics through injection, extrusion, blow molding, and pressing techniques.
Examples of Plastic Mould Steels:
- 1730 (C45W)
- 2083 (X40Cr14)
- 2085 (X40Cr14)
- 2738 (40CrMnNiMo8-6-4)
- 2311 (40CrMnMo7)
- 2312 (40CrMnMoS8-6)
- 2316 (X38CrMo16)
- 2764 (X19NiCrMo4)
- 2767 (X45NiCrMo4)
