High Speed Steels
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High Speed Steels
For modern industrial production, in particular mass production, machining is one of the most important shaping and forming processes. Almost all tools employed for this purpose are made from high-speed steels. In recent times, the use of high-speed steels has gained increasing importance for chipless shaping, e.g. for extrusion, blanking, and punching tools. With regard to chemical composition, a clear distinction is made between ‘Tungsten’, ‘Molybdenum’, and ‘Tungsten-Molybdenum’ alloyed high-speed steel grades which, depending on the dominant stresses they will be exposed to, contain differing amounts of Carbon, Vanadium, and Cobalt.
The characteristic properties of all high-speed steel grades include:
The characteristic properties of all high-speed steel grades include:
- High working hardness
- High wear resistance
- Excellent toughness
- Compressive strength
- High retention of hardness and red hardness
- Strength to prevent breakage on the cutting edge
Chemical Composition | Application | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Grade | C | Si | Mn | P | S | Cr | Mo | V | Ni | Cu | W | Co | |
M35 | 0.92 | 0.32 | 0.28 | 0.025 | <0.001 | 3.91 | 4.90 | 1.82 | 0.18 | 0.12 | 6.12 | 4.67 | As M2, Hobs, Drill reamers, Milling cutters and Forging Dies, Cold Forming Tools etc. |
M42 | 1.09 | 0.47 | 0.30 | 0.020 | <0.010 | 3.77 | 9.29 | 1.21 | 0.3 | 0.21 | 1.51 | 7.94 | Taps, Reamers, Broaching tools, Twist drills. |
T1 | 0.78 | 0.33 | 0.29 | 0.018 | - | 3.98 | - | 1.13 | - | - | 18.15 | - | Turning, planing and slotting tools, tapes, twist drills, threading dies, profile cutting tools, broaching tools, reamers. |
ASP2023 | 1.28 | 0.61 | 0.30 | 0.030 | 0.020 | 4.00 | 4.88 | 2.98 | 0.21 | 0.14 | 6.11 | 0.24 | Gear cutting tools, Cold work, Broaches, Rolls, Taps, Knives, Plastic injection etc. |
ASP2030 | 1.25 | 0.29 | 0.27 | 0.020 | 0.020 | 4.10 | 5.00 | 3.00 | 0.21 | 0.090 | 6.30 | 8.40 | Standard grade/good balance of properties, |
ASP2052 | 1.59 | 0.29 | 0.27 | 0.025 | 0.23 | 4.95 | 1.94 | 4.75 | 0.21 | 0.12 | 10.48 | 8.04 | Machining (Grinding, Turning, Milling), Polishing, Plastic Forming. |
ASP2060 | 2.20 | 0.36 | 0.32 | 0.026 | 0.024 | 4.12 | 6.82 | 6.39 | 0.20 | 0.14 | 6.48 | 10.36 | Good wear resistance and highest hardness of 70 HRC. |