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Technical Specifications
Product Overview
Metallurgical Characteristics
H13 tool steel exhibits a tempered martensitic microstructure with uniformly distributed primary and secondary carbides. The chromium-molybdenum-vanadium alloy system provides excellent secondary hardening response and thermal stability. Primary carbides (M7C3 and MC types) contribute to wear resistance, while the fine secondary carbide precipitation during tempering ensures optimal hot strength retention and thermal fatigue resistance.
Heat Treatment Process
MetalZenith employs controlled atmosphere hardening at 1010-1030°C followed by oil or air quenching, depending on section size. Double tempering at 540-620°C ensures stress relief and optimal hardness-toughness balance. Our proprietary cooling protocols minimize distortion while achieving uniform hardness distribution throughout the cross-section.
Advanced Manufacturing Process
Our H13 production utilizes vacuum induction melting followed by vacuum arc remelting to achieve exceptional cleanliness. Controlled forging and rolling operations ensure proper carbide distribution and grain flow orientation. Advanced annealing cycles optimize machinability while maintaining microstructural integrity for subsequent heat treatment operations.
Specialized Quality Testing
MetalZenith conducts comprehensive Rockwell hardness distribution mapping across tool sections, quantitative residual austenite analysis using X-ray diffraction, detailed carbide distribution evaluation through image analysis, and thermal fatigue testing simulating actual service conditions. Ultrasonic inspection ensures internal soundness critical for high-stress tooling applications.
Application-Specific Technical Considerations
For cutting tools, H13 provides excellent hot hardness retention and thermal shock resistance. In die casting applications, the superior thermal fatigue resistance and dimensional stability ensure extended tool life. For precision automotive components, the excellent hardenability and uniform properties enable complex geometries with tight tolerances. Injection molding applications benefit from the superior surface finish capability and corrosion resistance.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.32 - 0.45 |
| Chromium (Cr) | 4.75 - 5.50 |
| Molybdenum (Mo) | 1.10 - 1.75 |
| Vanadium (V) | 0.80 - 1.20 |
| Silicon (Si) | 0.80 - 1.20 |
| Manganese (Mn) | 0.20 - 0.50 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HRC) | 48 - 52 (Heat Treated) |
| Compressive Strength (MPa) | 2400 - 2800 |
| Impact Toughness (J) | 15 - 25 (Charpy V-notch) |
| Wear Resistance Index | 8.5 - 9.2 (ASTM G65) |
| Hardenability (DI) | 6.5 - 8.0 inches |
| Fatigue Strength (MPa) | 800 - 1000 (10? cycles) |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.80 |
| Melting Point (°C) | 1427 - 1454 |
| Thermal Conductivity (W/m·K) | 24.9 (at 20°C) |
| Thermal Expansion (×10??/K) | 11.2 (20-100°C) |
| Elastic Modulus (GPa) | 215 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Bars, Blocks, Plates, Forgings, Precision Ground |
| Diameter Range | 10 - 500mm |
| Thickness Range | 10 - 300mm |
| Length Range | 500 - 6000mm |
| Standards Compliance | ASTM A681, DIN 1.2344, JIS SKD61 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Hot Rolled, Machined, Ground |
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Our Advantages in Processing H13 Tool Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum arc remelting (VAR) and electroslag remelting (ESR) processes to achieve exceptional steel cleanliness and homogeneity. Our controlled atmosphere melting eliminates inclusions and ensures uniform carbide distribution, resulting in superior mechanical properties and enhanced tool life.
Comprehensive Quality Testing Protocol
Our H13 tool steel undergoes extensive quality verification including Rockwell hardness distribution mapping, residual austenite content analysis, carbide distribution evaluation, and thermal fatigue strength testing. Advanced metallographic analysis ensures optimal microstructure and performance consistency across all production batches.
Custom Heat Treatment Services
MetalZenith provides specialized heat treatment and machining services tailored to specific application requirements. Our technical team offers comprehensive support for tool design optimization, heat treatment parameter selection, and performance enhancement to maximize tool life and productivity in demanding applications.
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