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Technical Specifications
Product Overview
Metallurgical Characteristics
A2 tool steel exhibits a martensitic microstructure with uniformly distributed chromium and molybdenum carbides after proper heat treatment. The controlled carbide morphology provides excellent wear resistance while maintaining adequate toughness. The air-hardening characteristic eliminates quench cracking risks and ensures dimensional stability during heat treatment.
Heat Treatment Process
MetalZenith employs controlled atmosphere hardening at 925-980°C followed by air cooling to achieve optimal hardness. Tempering at 150-540°C allows precise hardness adjustment while maintaining dimensional stability. Our vacuum heat treatment capabilities ensure consistent results and superior surface quality.
Manufacturing Process
Our A2 production utilizes vacuum induction melting followed by electroslag remelting for exceptional cleanliness. Controlled forging with precise temperature monitoring ensures optimal carbide distribution and grain refinement. Advanced machining capabilities provide tight tolerances and superior surface finishes for demanding tool applications.
Specialized Quality Testing
MetalZenith conducts comprehensive Rockwell hardness distribution mapping across tool cross-sections, X-ray diffraction analysis for residual austenite content verification, detailed metallographic examination of carbide size and distribution, and rotating beam fatigue testing to validate tool life expectations in service conditions.
Application-Specific Considerations
For cutting tool applications, our A2 provides excellent edge retention and dimensional stability. In die manufacturing, the superior toughness prevents premature failure while maintaining wear resistance. For bearing applications, the fine carbide structure ensures smooth operation and extended service life. Precision machinery components benefit from the excellent machinability and dimensional stability, while automotive tooling applications leverage the consistent hardness and fatigue resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.95 - 1.05 |
| Chromium (Cr) | 4.75 - 5.50 |
| Molybdenum (Mo) | 0.90 - 1.40 |
| Vanadium (V) | 0.15 - 0.50 |
| Manganese (Mn) | 0.40 - 1.00 |
| Silicon (Si) | 0.10 - 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.025 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HRC) | 57 - 62 |
| Compressive Strength (MPa) | 2800 - 3200 |
| Impact Toughness (J) | 15 - 25 |
| Wear Resistance Index | 8.5 - 9.2 |
| Hardenability (mm) | 75 - 100 |
| Fatigue Strength (MPa) | 850 - 950 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.86 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 24.3 |
| Thermal Expansion (×10??/K) | 11.9 |
| Elastic Modulus (GPa) | 210 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Bars, Plates, Blocks, Precision Ground Stock |
| Diameter Range | 6 - 300mm |
| Thickness Range | 3 - 200mm |
| Length Range | 100 - 6000mm |
| Standards Compliance | ASTM A681, AISI A2, DIN 1.2363 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Hot Rolled, Cold Drawn, Precision Ground |
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Our Advantages in Processing A2 Tool Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting followed by electroslag remelting to achieve exceptional cleanliness and homogeneity in A2 tool steel. Our controlled forging process with precise temperature monitoring ensures optimal carbide distribution and grain structure refinement for superior tool performance.
Comprehensive Quality Testing Protocol
Our specialized testing includes Rockwell hardness distribution mapping, residual austenite content analysis via X-ray diffraction, carbide distribution evaluation through metallographic analysis, and rotating beam fatigue testing to ensure consistent performance in demanding tool applications.
Custom Heat Treatment Services
MetalZenith offers tailored heat treatment solutions including controlled atmosphere hardening, precision tempering, and stress relieving services. Our technical team provides comprehensive support for tool design optimization and performance enhancement based on specific application requirements.
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