- AISI M35
Standards : X100CrMoV5
| Element | Content (%) |
|---|---|
| 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
M35 is a cobalt-alloyed high-speed steel (similar to M2, but with ~5% cobalt). The cobalt addition increases red hardness, wear resistance, and cutting performance at high operating temperatures. It is widely used for manufacturing high-performance cutting tools such as drills, taps, end mills, reamers, hobs, broaches, and saw blades.
Key Features of M35
- Excellent hot hardness (maintains hardness at red heat).
- Better wear resistance than M2 due to 5% Co.
- Suitable for difficult-to-machine materials (stainless steels, heat-resistant alloys).
- Provides long tool life in high-speed cutting.
Mode of Supply
Kuber Multi Metals is the largest stockiest and supplier of M35 Steel in flat, square and round bar. We provide steel in all sizes as your requirements. M35 die steel is available in flat, square and round shape. Consult our team who will assist you for M35 steel query.
Steel Properties
The cobalt content in this high-performance high-speed steel results in high red hardness and tempering resistance. As a consequence, this grade is particularly suitable for conditions involving thermal stresses and discontinuous cutting. Under the name Rapidur 3245, AISI M 35 + S and material number 1.3245, this steel grade is supplied with a higher sulphur content (S = 0.10 %).
| Property | Value |
|---|---|
| Hardness (as quenched & tempered) | 64 – 66 HRC |
| Tensile Strength | ~ 2850 MPa |
| Yield Strength | ~ 2200 MPa |
| Compressive Strength | Very High |
| Wear Resistance | Excellent |
| Red Hardness | Excellent (better than M2 due to Co addition) |
| Toughness | Moderate to good |
Heat Treatment & Processes
Annealing
Temperature: 850 – 900 °C
Cooling: Slow furnace cooling at ≤ 10 °C/hr
Resulting Hardness: ~ 255 HB max
Stress Relieving
Temperature: ~ 600 – 700 °C
Cooling: Still air
Hardening (Austenitizing)
Preheat (two stages):
450 – 500 °C
850 – 900 °C
Austenitizing Temperature: 1180 – 1210 °C
Quenching: Salt bath, oil, or high-pressure gas
Tempering
Immediately after quenching
Temperature: 540 – 560 °C (triple tempering recommended)
Final Hardness: 64 – 66 HRC
Application
Heavy-duty milling cutters of all kinds, highly stressed twist drills and taps, profile knives, machining of high-strength materials, broaches. Manufacture of various cutting tools like cutter, broach, end milling cutter. Advanced punching die, screw die, the toughness and complex shape tools, reamer, milling cutter, bunt, punch, etc
Conclusion
The high-speed steel (HSS-E) AISI M35 is a high-quality cobalt-alloyed steel with improved hardness of the hot material, wear, and longevity. It is better suited for cutting difficult applications and can hence be used in drills, taps, end mills, hobs, and tools that machine hard alloys and stainless steels. M35 has a good tool life and reliability, and this makes it still a preferred tool of high performance as far as cutting tools are concerned.
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
