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Technical Specifications
Product Overview
Metallurgical Characteristics
M42 high-speed steel features a complex microstructure with primary carbides (MC, M6C, M23C6) uniformly distributed in a martensitic matrix. The cobalt addition enhances red hardness and thermal stability, while the balanced tungsten-molybdenum system provides exceptional wear resistance and cutting performance at elevated temperatures.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 1200-1220°C followed by rapid quenching and multiple tempering cycles at 540-580°C. This precise heat treatment protocol optimizes secondary hardening while maintaining dimensional stability and minimizing residual stress for critical automotive and structural applications.
Advanced Manufacturing Process
Our M42 production utilizes vacuum induction melting followed by electroslag remelting (ESR) to ensure exceptional cleanliness and homogeneity. Controlled forging and rolling operations optimize grain flow and eliminate segregation, resulting in superior mechanical properties and consistent performance across all product dimensions.
Specialized Quality Testing
MetalZenith conducts comprehensive testing protocols including formability assessment under high-stress conditions, specialized weldability evaluation for joining applications, hydrogen-induced cracking resistance testing per NACE standards, and delayed fracture analysis using sustained load testing to ensure reliability in critical high-strength applications.
Application-Specific Technical Considerations
For automotive manufacturing, M42 provides exceptional tool life in high-speed machining operations. In building construction and bridge engineering, its high strength-to-weight ratio enables lighter structural designs. For lifting equipment and pressure vessels, the superior fatigue resistance and fracture toughness ensure long-term reliability under cyclic loading conditions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 1.05 - 1.15 |
| Chromium (Cr) | 3.50 - 4.25 |
| Molybdenum (Mo) | 9.00 - 10.00 |
| Tungsten (W) | 1.15 - 1.85 |
| Vanadium (V) | 1.00 - 1.30 |
| Cobalt (Co) | 7.75 - 8.75 |
| Silicon (Si) | ≤ 0.45 |
| Manganese (Mn) | ≤ 0.40 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 2400 |
| Tensile Strength (MPa) | 2800 - 3200 |
| Elongation (%) | 8 - 12 |
| Impact Toughness (J) | 15 - 25 |
| Fatigue Strength (MPa) | 1200 - 1400 |
| Hardness (HRC) | 65 - 70 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 8.25 |
| Melting Point (°C) | 1420 - 1450 |
| Thermal Conductivity (W/m·K) | 24.5 |
| Thermal Expansion (×10??/K) | 10.8 |
| Elastic Modulus (GPa) | 230 |
| Poisson's Ratio | 0.27 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Bars, Rods, Plates, Tool Blanks, Custom Forgings |
| Diameter Range | 6 - 300mm |
| Thickness Range | 3 - 150mm |
| Length Range | 100 - 6000mm |
| Standards Compliance | ASTM A600, DIN 1.3247, JIS SKH59 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Ground, Machined, or As-Rolled |
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Our Advantages in Processing M42 Steel (HSS)
Advanced Powder Metallurgy Processing
MetalZenith utilizes cutting-edge powder metallurgy and vacuum induction melting to achieve superior carbide distribution and eliminate segregation in M42 steel. Our controlled atmosphere processing ensures exceptional cleanliness and uniform microstructure, delivering consistent high-strength performance across all product dimensions.
Comprehensive High-Strength Testing Protocol
Our M42 steel undergoes extensive specialized testing including formability assessment under extreme conditions, advanced weldability evaluation, hydrogen-induced cracking resistance testing, and delayed fracture analysis. This comprehensive testing ensures optimal performance in demanding automotive manufacturing and structural applications.
Custom Heat Treatment & Technical Support
MetalZenith provides tailored heat treatment solutions optimized for specific high-strength applications, including precision hardening cycles and tempering protocols. Our metallurgical experts offer comprehensive technical support for automotive tooling, bridge construction, and pressure vessel manufacturing requirements.
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