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Technical Specifications
Product Overview
Metallurgical Characteristics
SKD61 exhibits a tempered martensitic microstructure with uniformly distributed carbides of chromium, molybdenum, and vanadium. This microstructural configuration provides exceptional thermal fatigue resistance and dimensional stability under cyclic thermal loading conditions. The balanced alloy composition ensures optimal hardenability and toughness for structural applications requiring sustained performance at elevated temperatures.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 1020-1050°C followed by oil or air quenching and double tempering at 550-650°C. This precise heat treatment protocol optimizes the carbide precipitation and matrix hardness balance, ensuring superior mechanical properties and thermal stability for structural applications.
Advanced Manufacturing Process
Our SKD61 production utilizes vacuum induction melting followed by electroslag remelting to achieve exceptional cleanliness and chemical homogeneity. Controlled forging operations with optimized reduction ratios ensure proper grain flow and eliminate internal defects, critical for structural integrity in demanding applications.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including thermal fatigue crack propagation analysis, high-temperature creep resistance evaluation, and stress corrosion cracking assessment. Welding performance testing ensures optimal joint integrity, while forming capability assessments verify suitability for complex structural geometries.
Structural Application Engineering
For building construction, SKD61 provides exceptional performance in high-temperature structural elements and fire-resistant frameworks. Bridge engineering applications benefit from superior fatigue resistance under thermal cycling. In machinery manufacturing, the steel delivers reliable performance in heavy-duty structural housings and support frames. Vehicle manufacturing utilizes SKD61 for chassis reinforcements requiring thermal stability, while general engineering applications leverage its versatility in custom structural solutions.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.35 - 0.42 |
| Silicon (Si) | 0.80 - 1.20 |
| Manganese (Mn) | 0.25 - 0.50 |
| Chromium (Cr) | 4.80 - 5.50 |
| Molybdenum (Mo) | 1.00 - 1.50 |
| Vanadium (V) | 0.80 - 1.20 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Yield Strength (MPa) | ≥ 1000 |
| Tensile Strength (MPa) | 1200 - 1400 |
| Elongation (%) | ≥ 12 |
| Impact Energy at 20°C (J) | ≥ 25 |
| Hardness (HRC) | 45 - 50 |
| Thermal Fatigue Resistance | Excellent |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.80 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity (W/m·K) | 24.5 |
| Thermal Expansion (×10??/K) | 11.5 |
| Elastic Modulus (GPa) | 215 |
| Poisson's Ratio | 0.27 - 0.30 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Plates, Blocks, Bars, Forgings, Custom Shapes |
| Thickness Range | 10 - 300mm |
| Width Range | 100 - 2000mm |
| Length Range | 500 - 6000mm |
| Standards Compliance | JIS SKD61, AISI H13, DIN 1.2344 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Hot Rolled, Machined, Polished |
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Our Advantages in Processing SKD61 Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes state-of-the-art vacuum induction melting followed by electroslag remelting to achieve exceptional cleanliness and homogeneity in SKD61 steel. Our controlled forging processes with precise temperature monitoring ensure optimal grain flow and enhanced structural integrity for demanding applications.
Comprehensive Structural Testing
Our SKD61 steel undergoes extensive testing protocols including thermal fatigue resistance evaluation, high-temperature tensile testing, impact toughness assessment, and stress corrosion cracking resistance analysis. We also conduct specialized welding performance tests and forming capability assessments to ensure optimal structural performance.
Custom Engineering Solutions
MetalZenith provides comprehensive technical support including custom heat treatment schedules, precision machining services, and application-specific property optimization. Our engineering team works closely with clients to develop tailored solutions for complex structural applications requiring superior thermal and mechanical performance.
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