Description
M7 Tool Steel
M7 tool steel, also known as a high-speed tool steel, is known for its excellent wear resistance, toughness, and edge retention, even at elevated temperatures. Its unique chemical composition, which includes high levels of carbon, molybdenum, and vanadium, makes it highly suitable for heavy-duty cutting applications, tools, and industrial machinery parts. Compared to other high-speed steels, M7 exhibits superior resistance to deformation and breakage, making it a popular choice for tooling applications that involve high-pressure and extreme operating conditions.
Key Features of M7 Tool Steel:
- Superior Edge Retention: M7 maintains sharpness under intense working conditions, making it ideal for cutting tools.
- High Wear Resistance: With its high vanadium content, M7 has enhanced resistance to wear and abrasion, which extends tool life.
- Heat Resistance: M7 tool steel performs well at elevated temperatures, maintaining hardness and performance even under thermal stress.
- Toughness: It offers excellent toughness, which reduces the likelihood of cracking under stress and shock.
Applications of M7 Tool Steel:
- High-Speed Cutting Tools: M7 is widely used in the manufacturing of drills, taps, milling cutters, and other high-speed cutting tools due to its exceptional edge retention and hardness.
- Industrial Knives: The steel is commonly used for industrial knives and blades where wear resistance is crucial.
- Cold Work Tools: In environments where tools are exposed to high stress and abrasion, M7 is used for cold work punches, dies, and cutting inserts.
- Reamers and Taps: M7 is particularly well-suited for reamers and taps that require toughness and resistance to chipping.
Chemical Composition of M7 Tool Steel:
| Element | Percentage (%) |
|---|---|
| Carbon (C) | 1.00 – 1.15 |
| Manganese (Mn) | 0.15 – 0.40 |
| Silicon (Si) | 0.15 – 0.65 |
| Chromium (Cr) | 3.75 – 4.50 |
| Vanadium (V) | 1.75 – 2.00 |
| Molybdenum (Mo) | 8.00 – 9.50 |
| Tungsten (W) | 1.50 – 2.50 |
Grades of M7 Tool Steel:
| Grade | Key Features | Applications |
|---|---|---|
| M7 | High wear resistance, toughness, heat resistance | Cutting tools, reamers, punches, cold work tools |
| M7-Co | Cobalt added for enhanced hot hardness | For applications where extreme heat is involved |
Heat Treatment Process:
M7 tool steel undergoes a heat treatment process that involves preheating, austenitizing, quenching, and tempering. This process improves its hardness and wear resistance, making it highly suitable for high-performance tools and dies.
Advantages of M7 Tool Steel:
- Extended Tool Life: M7’s resistance to wear and heat reduces the need for frequent tool replacement.
- High Toughness: The steel’s ability to withstand stress and shock ensures long-term durability in high-load applications.
- Excellent Performance at High Temperatures: M7 retains its hardness even at elevated temperatures, making it ideal for high-speed cutting tools that generate significant heat.
Supply Cities:
Mumbai Ahmedabad, Amaravathi, Ambattur, Bangalore, Belgaum, Chennai, Chittoor, Coimbatore, Dindigul, Mysore, Nellore, Hyderabad, Kochi, Mangalore, Tirupur, Tuticorin, Madurai, Andhra Pradesh, Karnataka, Puducherry, Kerala, Tamil Nadu, Telangana, Visakhapatnam, Kochi, Kerala, Hubli-Dharwad, Karnataka, Ghaziabad Kolkata.
