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Technical Specifications
Product Overview
Metallurgical Characteristics
S5 tool steel exhibits a tempered martensitic microstructure with uniformly distributed tungsten and molybdenum carbides. The silicon content enhances shock resistance while maintaining adequate hardness. The balanced alloy composition provides excellent through-hardening capability and superior impact toughness compared to conventional tool steels.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 870-900°C followed by air cooling or oil quenching depending on section size. Multiple tempering cycles at 150-650°C achieve optimal hardness-toughness balance. Our precise temperature control and atmosphere protection ensure consistent carbide morphology and minimal decarburization.
Advanced Manufacturing Process
Our production process begins with vacuum induction melting followed by electroslag remelting for maximum cleanliness. Controlled forging operations optimize grain flow and eliminate segregation. Advanced annealing cycles ensure machinability while maintaining carbide distribution uniformity throughout the cross-section.
Specialized Quality Testing
MetalZenith conducts comprehensive Rockwell hardness distribution mapping across tool sections, X-ray diffraction analysis for retained austenite content (typically <5%), detailed metallographic examination of carbide size and distribution, and rotating beam fatigue testing to verify performance under cyclic loading conditions.
Application Engineering Considerations
For cutting tool applications, S5 provides excellent edge retention and shock resistance. In die manufacturing, the balanced hardness-toughness combination extends tool life under impact loading. Bearing applications benefit from superior fatigue resistance and dimensional stability. Precision machinery components utilize the excellent machinability and consistent properties, while automotive parts leverage the superior wear resistance and thermal stability.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.50 - 0.65 |
| Manganese (Mn) | 0.60 - 1.00 |
| Silicon (Si) | 0.90 - 1.20 |
| Chromium (Cr) | 0.50 - 1.00 |
| Molybdenum (Mo) | 1.20 - 1.80 |
| Phosphorus (P) | ≤ 0.030 |
| Sulfur (S) | ≤ 0.030 |
| Tungsten (W) | 2.00 - 2.75 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Hardness (HRC) | 58 - 62 |
| Compressive Strength (MPa) | ≥ 2800 |
| Impact Toughness (J) | 15 - 25 |
| Wear Resistance Index | 8.5 - 9.2 |
| Hardenability (mm) | 75 - 100 |
| Tensile Strength (MPa) | 2000 - 2400 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.85 |
| 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 | Round Bars, Flat Bars, Blocks, Forgings |
| Diameter Range | 10 - 500mm |
| Thickness Range | 5 - 200mm |
| Length Range | 500 - 6000mm |
| Standards Compliance | ASTM A681, DIN 1.2162, JIS SKS3 |
| Heat Treatment Condition | Annealed, Hardened & Tempered |
| Surface Finish | Hot Rolled, Cold Drawn, Machined |
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Our Advantages in Processing S5 Tool Steel
Advanced Vacuum Melting Technology
MetalZenith utilizes vacuum induction melting followed by electroslag remelting (ESR) to achieve exceptional cleanliness and homogeneity in S5 tool steel. Our controlled forging and heat treatment processes ensure optimal carbide distribution and grain structure for maximum impact resistance and tool life.
Comprehensive Tool Steel Testing
Our specialized testing protocols include Rockwell hardness distribution mapping, retained austenite content analysis using X-ray diffraction, carbide distribution evaluation through metallographic examination, and rotating beam fatigue testing to ensure consistent performance in demanding tool applications.
Custom Heat Treatment Solutions
MetalZenith offers tailored heat treatment services including precise austenitizing, controlled quenching, and multiple tempering cycles. Our metallurgical experts provide application-specific processing recommendations and technical support for optimal tool performance and extended service life.
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