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Technical Specifications
Product Overview
Metallurgical Characteristics
AISI M2 is a tungsten-molybdenum high speed steel with excellent hot hardness and wear resistance. The steel contains primary carbides of MC (vanadium carbide), M6C (tungsten-molybdenum carbide), and M23C6 (chromium carbide) types, providing superior cutting performance and tool life. MetalZenith's advanced vacuum melting process ensures uniform carbide distribution and minimal segregation.
Heat Treatment Process
Annealing: Heat to 870-900°C, hold for sufficient time, then cool slowly to achieve maximum softness (≤255 HB). Hardening: Preheat to 650-700°C, then heat to 1210-1230°C in protective atmosphere, followed by quenching in oil, air, or salt bath. Tempering: Perform double tempering at 540-580°C for 2 hours each cycle to achieve desired hardness of 62-65 HRC.
Manufacturing Process
MetalZenith employs electric arc furnace melting followed by vacuum induction melting (VIM) and electroslag remelting (ESR) to ensure exceptional cleanliness. Hot forging is performed at 1150-950°C with careful temperature control to optimize carbide distribution. Subsequent machining, heat treatment, and finishing operations are conducted using advanced equipment with precise process control.
Quality Standards & Testing
All AISI M2 steel products undergo comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property testing, hardness verification, microstructural examination, and ultrasonic inspection. MetalZenith maintains ISO 9001:2015 certification and provides full material traceability with certified test reports. Advanced quality control systems ensure consistent performance and reliability in demanding applications.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.78-0.88 |
| Manganese (Mn) | 0.15-0.40 |
| Silicon (Si) | 0.20-0.45 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 3.75-4.50 |
| Molybdenum (Mo) | 4.50-5.50 |
| Tungsten (W) | 5.50-6.75 |
| Vanadium (V) | 1.75-2.20 |
| Nickel (Ni) | ≤ 0.30 |
| Copper (Cu) | ≤ 0.25 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (Annealed) | ≤ 255 HB |
| Hardness (Hardened & Tempered) | 62-65 HRC |
| Tensile Strength (Annealed) | 1030 MPa |
| Yield Strength (Annealed) | 685 MPa |
| Elongation (Annealed) | 10% |
| Reduction of Area (Annealed) | 25% |
| Impact Energy (Annealed) | 15 J |
| Modulus of Elasticity | 230 GPa |
| Compressive Strength | 2800 MPa |
| Fatigue Limit | 450 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.15 g/cm³ |
| Melting Point | 1480-1520°C |
| Thermal Conductivity (20°C) | 22 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 10.5×10-6/K |
| Thermal Expansion Coefficient (20-200°C) | 11.2×10-6/K |
| Thermal Expansion Coefficient (20-400°C) | 12.1×10-6/K |
| Specific Heat Capacity | 460 J/kg·K |
| Electrical Resistivity (20°C) | 0.65 µΩ·m |
| Magnetic Permeability | Non-magnetic (annealed) |
| Curie Temperature | Not applicable |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Round bars, flat bars, square bars, plates, sheets, forged blocks |
| Round Bar Diameter | 6-300 mm |
| Flat Bar Dimensions | 10-100 mm thickness, up to 300 mm width |
| Plate Thickness | 10-200 mm |
| Length | Up to 6000 mm (custom lengths available) |
| Surface Finish | Hot rolled, cold drawn, turned, ground, polished |
| Dimensional Tolerance | h9, h10, h11 (custom tolerances available) |
| Standards Compliance | ASTM A600, DIN EN ISO 4957, JIS G4403, GB/T 9943 |
| Heat Treatment Condition | Annealed, hardened & tempered, soft annealed |
| Quality Grades | Standard grade, premium grade, aerospace grade |
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Our Advantages in Processing AISI M2
Advanced Vacuum Melting Technology
MetalZenith employs state-of-the-art vacuum induction melting (VIM) and electroslag remelting (ESR) processes to produce ultra-clean AISI M2 steel with minimal inclusions, ensuring superior mechanical properties and enhanced tool life performance.
Precision Heat Treatment Control
Our computer-controlled heat treatment facilities with precise temperature monitoring and atmosphere control guarantee optimal carbide distribution and hardness uniformity throughout the material, ensuring consistent performance in demanding applications.
Comprehensive Customization Services
MetalZenith offers extensive customization options including specific dimensional tolerances, surface finishes, and heat treatment conditions. Our global supply chain ensures reliable delivery worldwide with full technical support and engineering consultation services.
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