M2 High-Speed Steel
1.3343
- EN1.3343
- ENHS6-5-2C
- AISIM2
General-purpose high-speed steel with a wide range of applications. Retains its mechanical properties at high temperatures and offers high wear resistance. Suitable for wire EDM, welding, PVD and CVD coating.
01Applications
- Milling cutters, taps, reamers
- Twist drills
- Countersinks
- Circular saws
- Broaches
- Slitting cutters
- Woodworking cutters
- Planer knives and other cutting tools
- Dies for cold forming of bolts and nuts
- Punches and expanders
- Cold extrusion punches and dies
02Delivery Condition
- 60–64 HRC
03Heat Treatment
Typical values
- Soft annealing
- 770–840 °C; max. 269 HB
- Stress relieving
- 600–650 °C
- Preheating
- Three stages: 450–550 °C, 850 °C, 1050 °C
- Hardening
- 1190–1230 °C; short soak (80–150 s)
- Quenching medium
- 500–550 °C salt bath + air; pressurised gas in vacuum
- Tempering
- 540–570 °C, three times, 1–2 h
- Working hardness
- 62–66 HRC
- Note
- Protective atmosphere/vacuum against decarburisation
Heat treatment cycle (schematic)
Tempering diagram (approximate)
Values are approximate and for information only; they vary with section size, heat and furnace conditions. Binding values are determined from the manufacturer’s data under laboratory conditions.
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