Tool Grade
M2 Steel
High-speed steel (HSS)
Molybdenum-tungsten high-speed steel (HSS), the most versatile of its kind. Retains its hardness and edge at the high temperatures of high-speed cutting. For high-performance cutting tools. Reaches 62 to 65 HRC with high hot hardness, and offers a very favorable cost-performance ratio compared with other high-speed steels.
Main features
High hot hardness (red hardness)
Excellent edge retention
Working hardness 62–65 HRC
Standards and equivalents
| SAE / AISI | EN | DIN | JIS |
|---|---|---|---|
| M2 | HS6-5-2C | 1.3343 | SKH51 |
Chemical composition
| % | C | Si | Mn | Cr | Mo | W | V | P | S |
|---|---|---|---|---|---|---|---|---|---|
| Min | 0.78 | 0.20 | 0.15 | 3.75 | 4.50 | 5.50 | 1.75 | — | — |
| Max | 0.88 | 0.45 | 0.40 | 4.50 | 5.50 | 6.75 | 2.20 | 0.030 | 0.030 |
Supply condition
Hot rolledAnnealedAvailable package sizes
Plates1/8" – 4"3 mm – 102 mm
Round bars1/4" – 3"6 mm – 76 mm—
—
Typical applications
- High-speed drill bits
- Taps for threading
- Milling cutters
- Precision reamers
- Cutting broaches
- Gear cutters
- Industrial knives
- Lathe tools
- Band saw blades
Note: The information and values in this data sheet are provided for reference only and may vary depending on manufacturing, treatment and application conditions. They do not constitute guaranteed specifications, so use and interpretation of this data is the user's responsibility.
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