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Technical Specifications
Product Overview
Metallurgical Characteristics
M2 tool steel exhibits a complex microstructure consisting of a tempered martensitic matrix with uniformly distributed primary and secondary carbides. The high tungsten and molybdenum content provides exceptional red hardness and wear resistance, while vanadium carbides contribute to superior cutting edge retention. The fine carbide distribution achieved through MetalZenith's controlled solidification process ensures optimal tool performance.
Heat Treatment Process
MetalZenith employs vacuum hardening at 1210-1230°C followed by controlled cooling and multiple tempering cycles at 540-580°C. Our precise heat treatment protocols ensure optimal hardness distribution while minimizing retained austenite content below 8%. Cryogenic treatment at -80°C is available for enhanced dimensional stability and wear resistance.
Manufacturing Process
MetalZenith utilizes vacuum induction melting followed by electroslag remelting to achieve superior cleanliness and carbide distribution. Our controlled forging and rolling processes ensure optimal grain flow and mechanical properties. Advanced powder metallurgy routes are available for applications requiring ultra-fine carbide distribution and isotropic properties.
Specialized Quality Testing
Our comprehensive testing protocol includes Rockwell hardness mapping across cross-sections, X-ray diffraction analysis for retained austenite quantification, metallographic evaluation of carbide size and distribution, and rotating beam fatigue testing at various stress levels. Ultrasonic inspection ensures internal soundness critical for high-performance tooling applications.
Application Engineering
For cutting tool applications, M2 provides excellent balance of hardness and toughness with superior edge retention. In cold forming dies, the high compressive strength and wear resistance ensure extended tool life. For bearing manufacturing, the fine carbide structure and high hardness provide exceptional rolling contact fatigue resistance. Precision machinery components benefit from dimensional stability and consistent mechanical properties, while automotive applications leverage the material's reliability under cyclic loading conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.78 - 0.88 |
| Chromium (Cr) | 3.75 - 4.50 |
| Molybdenum (Mo) | 4.50 - 5.50 |
| Tungsten (W) | 5.50 - 6.75 |
| Vanadium (V) | 1.75 - 2.20 |
| Silicon (Si) | 0.20 - 0.45 |
| Manganese (Mn) | 0.15 - 0.40 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HRC) | 63 - 65 |
| Compressive Strength (MPa) | ≥ 4000 |
| Impact Toughness (J) | 15 - 25 |
| Wear Resistance Index | 8.5 - 9.2 |
| Hardenability (mm) | ≥ 75 |
| Red Hardness at 600°C (HRC) | ≥ 58 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 8.16 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 24.3 |
| Thermal Expansion (×10??/K) | 10.8 |
| Elastic Modulus (GPa) | 230 |
| Poisson's Ratio | 0.27 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Bars, Rods, Plates, Forgings, Powder |
| Diameter Range | 6 - 500mm |
| Thickness Range | 3 - 200mm |
| Length Range | 100 - 6000mm |
| Standards Compliance | ASTM A600, AISI M2, DIN 1.3343 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Ground, Turned, Centerless Ground |
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Our Advantages in Processing M2 Tool Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting and electroslag remelting processes with precise temperature control to achieve optimal carbide distribution and eliminate inclusions. Our advanced melting technology ensures consistent chemical composition and superior metallurgical cleanliness throughout the material.
Comprehensive Tool Steel Testing
MetalZenith conducts specialized testing including Rockwell hardness mapping across sections, retained austenite content analysis via X-ray diffraction, carbide distribution evaluation through metallographic analysis, and rotating beam fatigue testing to ensure optimal tool performance and longevity.
Custom Heat Treatment Services
MetalZenith offers specialized heat treatment services including vacuum hardening, precise tempering cycles, and cryogenic treatment. Our metallurgical engineers provide technical support for optimal hardness profiles and dimensional stability tailored to specific tooling applications.
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