- AISI M2
Standards : X100CrMoV5
| Element | % Composition |
|---|---|
| Carbon (C) | 0.90 – 1.00 |
| Tungsten (W) | 5.50 – 6.75 |
| Molybdenum (Mo) | 4.50 – 5.50 |
| Vanadium (V) | 1.75 – 2.35 |
| Cobalt (Co) | 4.50 – 5.00 |
| Chromium (Cr) | 3.75 – 4.50 |
| Silicon (Si) | ≤ 0.45 |
| Manganese (Mn) | ≤ 0.40 |
| Phosphorus (P) | ≤ 0.03 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Grade Brief
AISI M2 is a molybdenum-based high-speed steel belonging to the tungsten–molybdenum (W–Mo) series. It is the most widely used high-speed steel, offering an excellent balance of toughness, wear resistance, and red hardness. M2 has largely replaced T1 high-speed steel in many applications due to its superior performance and cost-effectiveness.
Key Features
- Medium-alloyed high-speed steel
- Good machinability in annealed condition
- Excellent combination of hardness and toughness
- High red hardness (retains hardness at elevated temperatures)
- Good wear resistance
- Versatile and economical compared to T1
Mode of Supply
Kuber Multi Metals is the largest stockiest and supplier of M2 Steel in flat, square and round bar. We provide steel in all sizes as your requirements. M2 die steel is available in flat, square and round shape. Consult our team who will assist you for M2 steel query.
Steel Properties
Standard high-speed steel grade. Its well-balanced alloy composition forms the basis of its high toughness and good cutting edge retention, rendering it suitable for a large variety of applications.
| Temperature (°C) | 20 | 350 | 700 |
|---|---|---|---|
| Thermal Conductivity (W/m·K) | 32.8 | 23.5 | 25.5 |
Physical Properties
These physical properties are approximate values and can vary depending on the specific composition , heat treatment and manufacturing processes used for M2 steel.
| Condition | Hardness (HRC) | Tensile Strength (MPa) | Yield Strength (MPa) | Charpy Impact (J) |
|---|---|---|---|---|
| Annealed | ~229 HB (~22 HRC) | ~860 | ~600 | High toughness |
| Hardened & Tempered | 62 – 65 | ~3000 | ~2200 | Moderate |
Heat Treatment & Processes
Annealing:
- Heat uniformly to 850–900°C.
- Hold for 1–2 hours.
- Furnace cool slowly at a rate not exceeding 20°C per hour down to 600°C, then air cool.
- Hardness after annealing: ~ 229 HB.
Hardening (Austenitizing):
- Preheat in two steps: 450–500°C, then 850–900°C.
- Final heat to 1200–1250°C (austenitizing temperature).
- Hold until uniformly heated.
- Quench in oil, salt bath, or forced air.
Tempering:
- Immediately temper after quenching.
- Typical tempering temperature: 540–560°C.
- Double or triple tempering recommended.
- Final hardness: 62–65 HRC.
Application
Cutting tools: twist drills, end mills, taps, saws, reamers, milling cutters, knives, Cold work tools: punches, dies, and shear blades, Cutting applications involving high speed and light cuts.
Conclusion
High-speed tool steel (AISI M2) is still the most popular type on the market, and it has been that way due to its great balance of hardness, toughness, red hardness, and wear resistance. M2 is preferred in drills, mills, taps, and cold work tools with superior machinability in the annealed form and remarkable performance following heat treatment. It is the most popular cutting tool in the world, due to its flexibility and cost-effectiveness in any high-performance cutting application.
Addition to other Grades
HCHCR-D2 Steel , HCHCR-D3 Steel , P20+Ni Steel , P20 Steel , P20 HH , Stavax ESR , DB6 Steel , H13 Steel, H11 Steel, H21 Steel, H10 Steel, H12 Steel, M2 Steel, M35 Steel, M42 Steel, T1 Steel, C 45, MS Steel, En 31, En 24 , En 353 , En 19 , En 8 , En 8D , En 9 , En 47 , 20 Mncrs , SAE8620 , DIN 2379 Steel, DIN 2080 Steel, DIN 2738 Steel, DIN 2311 Steel, DIN 2714 Steel, DIN 2344 Steel , DIN 2343 Steel, DIN 2581 Steel, DIN 2365 Steel, DIN 2606 Steel, DIN 3343 Steel, DIN 3243 Steel, DIN 3247 Steel, DIN 3355 Steel , AISI D2 Steel, AISI D3 Steel, AISI P20+Ni Steel, AISI P20 Steel, AISI L6 Steel, AISI H13 Steel, AISI H11 Steel, AISI H21 Steel, AISI H10 Steel, AISI H12 Steel, AISI M2 Steel , AISI M35 Steel, AISI M42 Steel , AISI T1 Steel
