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Technical Specifications
Product Overview
Metallurgical Characteristics
Heat Resistant Steel features a tempered martensitic microstructure with fine carbide precipitation throughout the matrix. The controlled addition of chromium and molybdenum provides excellent oxidation resistance and creep strength, while vanadium contributes to precipitation strengthening and grain refinement. The optimized carbide distribution ensures superior long-term microstructural stability at elevated temperatures.
Heat Treatment Process
MetalZenith employs controlled austenitizing at 1050-1080°C followed by accelerated cooling and tempering at 730-760°C. This precise heat treatment schedule optimizes carbide precipitation and ensures maximum creep resistance while maintaining adequate toughness for fabrication and service conditions.
Advanced Manufacturing Process
Our manufacturing process begins with vacuum induction melting to minimize impurities and ensure chemical homogeneity. Controlled forging and rolling operations optimize grain flow and eliminate internal defects. Final heat treatment is performed in controlled atmosphere furnaces with precise temperature monitoring to achieve consistent mechanical properties throughout the cross-section.
Specialized Quality Testing
MetalZenith conducts comprehensive testing including 1000-hour creep rupture testing at service temperatures, cyclic oxidation testing up to 800°C, thermal shock resistance evaluation, and long-term aging studies to verify microstructural stability. Advanced metallographic analysis ensures optimal carbide morphology and distribution for maximum high-temperature performance.
Application-Specific Technical Considerations
For gas turbine applications, our Heat Resistant Steel provides exceptional creep resistance and thermal fatigue performance in combustor and transition piece components. In boiler applications, superior steam oxidation resistance and stress rupture properties ensure reliable long-term operation. For petrochemical service, excellent resistance to hydrogen attack and sulfidation makes it ideal for high-temperature reactor components. Aerospace applications benefit from the material's lightweight properties and exceptional thermal cycling resistance in exhaust system components.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 - 0.15 |
| Chromium (Cr) | 8.0 - 10.0 |
| Molybdenum (Mo) | 0.90 - 1.10 |
| Manganese (Mn) | 0.30 - 0.60 |
| Silicon (Si) | 0.25 - 0.50 |
| Vanadium (V) | 0.18 - 0.25 |
| Phosphorus (P) | ≤ 0.020 |
| Sulfur (S) | ≤ 0.010 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| High Temperature Yield Strength at 550°C (MPa) | ≥ 280 |
| 1000h Creep Strength at 600°C (MPa) | ≥ 120 |
| High Temperature Fatigue Strength at 500°C (MPa) | ≥ 200 |
| Thermal Fatigue Resistance (cycles) | ≥ 10,000 |
| Oxidation Rate at 650°C (mg/cm2·h) | ≤ 0.05 |
| Room Temperature Tensile Strength (MPa) | 580 - 750 |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (g/cm3) | 7.75 |
| Melting Point (°C) | 1480 - 1520 |
| Thermal Conductivity at 500°C (W/m·K) | 28.5 |
| Thermal Expansion at 20-600°C (×10??/K) | 13.2 |
| Elastic Modulus at 550°C (GPa) | 165 |
| Specific Heat Capacity (J/kg·K) | 460 |
📏 Product Specifications
| Specification | Details |
|---|---|
| Available Forms | Tubes, Pipes, Plates, Bars, Forgings, Castings |
| Tube Wall Thickness | 3 - 50mm |
| Pipe Diameter Range | 25 - 600mm |
| Plate Thickness Range | 8 - 150mm |
| Standards Compliance | ASTM A213, ASME SA-213, EN 10216-2 |
| Heat Treatment Condition | Normalized & Tempered |
| Service Temperature Range | Up to 650°C continuous operation |
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Our Advantages in Processing Heat Resistant Steel
Advanced Vacuum Melting & Heat Treatment
MetalZenith employs vacuum induction melting with controlled atmosphere heat treatment and precise temperature profiling to achieve optimal carbide precipitation and grain boundary strengthening. Our advanced processing ensures exceptional microstructural stability and superior creep resistance at elevated temperatures up to 650°C.
Comprehensive High-Temperature Testing
MetalZenith conducts rigorous testing including 1000-hour creep strength evaluation, cyclic oxidation resistance testing at 800°C, thermal cycling fatigue assessment, and long-term microstructural stability analysis. Our testing protocols ensure reliable performance in demanding high-temperature service conditions.
Custom High-Temperature Solutions
MetalZenith provides tailored heat treatment schedules, custom alloy modifications, and specialized forming processes for specific high-temperature applications. Our technical team offers comprehensive support for gas turbine, boiler, and aerospace component design optimization.
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