SPA-H Corten Steel Sheet
Product
- Stainless Steel
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Weathering Steel
S355 Corten Steel Sheet
Product Introduction
| Technical Parameters of Weathering Steel Plate | |||
| Parameter Category | Parameter | Technical Specifications | Common Standards (Examples) |
| Material Classification | Grade Designation | ASTM: A242, A588, A606, A847, A871 EN: S235J0W, S235J2W, S355J0WP, S355J2WP, S355J0W, S355J2W CORTEN: A, B | ASTM A242, ASTM A588, EN 10025-5 |
| Type | Painted (for immediate protection), Unpainted (weathering) | / | |
| Chemical Composition | Copper Content (%) | 0.25-0.55 (Key weathering element) | ASTM A242 |
| Chromium Content (%) | 0.30-1.25 | ASTM A242 | |
| Nickel Content (%) | 0.12-0.65 | ASTM A242 | |
| Silicon Content (%) | 0.25-0.75 | ASTM A242 | |
| Phosphorus Content (%) | 0.01-0.04 | ASTM A242 | |
| Carbon Content (%) | ≤0.22 (Grade dependent) | ASTM A588 | |
| Mechanical Properties | Yield Strength (MPa) | 345-500 (Grade and thickness dependent) | ASTM E10 |
| Tensile Strength (MPa) | 485-700 (Grade and thickness dependent) | ASTM A370 | |
| Elongation (%) | 18-22 (Minimum in 50mm) | ASTM A370 | |
| Impact Toughness (J) | 20-34 at -20°C to -40°C (Grade and temperature dependent) | ASTM A370 | |
| Physical Properties | Density (g/cm³) | 7.85 | ASTM B311 |
| Modulus of Elasticity (GPa) | 200-210 | ASTM E111 | |
| Coefficient of Thermal Expansion (10⁻⁶/°C) | 11.0-12.0 at 20-100°C | ASTM E228 | |
| Thermal Conductivity (W/m·K) | 45-50 at 20°C | ASTM E1461 | |
| Corrosion Properties | Atmospheric Corrosion Resistance | 4-8 times carbon steel (Environment dependent) | ASTM G101 |
| Patina Formation Time | 6-24 months (Environment dependent) | / | |
| Corrosion Rate | 0.002-0.003 mm/year in rural atmosphere | ASTM G50 | |
| Protective Patina Characteristics | Dense, adherent, self-healing | / | |
| Dimensional Specifications | Thickness Range (mm) | 3.0-150.0 (Standard), Custom thickness available | ASTM A6 |
| Width Range (mm) | 1500-4000 (Standard) | ASTM A6 | |
| Length Range (mm) | 6000-18000 (Standard) | ASTM A6 | |
| Flatness Tolerance | 0.5-3 mm/m (Depends on thickness) | ASTM A6 | |
| Tolerances | Thickness Tolerance | ±0.1mm to ±0.8mm (Depends on thickness) | ASTM A6 |
| Width Tolerance | ±3mm to ±15mm | ASTM A6 | |
| Length Tolerance | ±10mm to ±40mm | ASTM A6 | |
| Surface Properties | Surface Finish | Hot-rolled, Shot blasted, Pre-weathered | ASTM A480 |
| Patina Color | Orange-brown to violet-brown (Natural), Accelerated patina available | / | |
| Surface Roughness (Ra) | 2.5-12.5 μm (As rolled) | ASME B46.1 | |
| Environmental Performance | Suitable Environments | Rural, Urban, Industrial, Marine (with precautions) | / |
| Critical Humidity Level | ~60% RH for patina stabilization | / | |
| Chloride Resistance | Moderate (Not recommended for severe marine splash zones) | / | |
| Processing Characteristics | Weldability | Excellent (With compatible electrodes) | AWS D1.1 |
| Machinability | Good (Similar to carbon steel) | / | |
| Formability | Good (Minimum bending radius 2-3x thickness) | ASTM E190 | |
| Cutability | Excellent with all thermal cutting methods | / | |
| Metallurgical Properties | Microstructure | Ferrite-Pearlite with copper precipitates | / |
| Grain Size | ASTM 5-9 | ASTM E112 | |
| Non-Metallic Inclusions | Maximum Level 2.0 | ASTM E45 | |
| Testing & Certification | Corrosion Testing | Cyclic corrosion testing per ASTM G85 | ASTM G85 |
| Mechanical Testing | Tensile, Bend, Impact | ASTM A370 | |
| Chemical Analysis | Spectrochemical analysis | ASTM A751 | |
| Certification | Mill Test Certificate 3.1/3.2 | EN 10204 | |
| Application Performance | Design Strength | Same as carbon steel in structural applications | AISC 360 |
| Fire Resistance | Better than carbon steel at elevated temperatures | / | |
| Fatigue Strength | Comparable to carbon steel of similar strength | ASTM E466 | |
| Service Temperature | -50°C to +400°C | / | |
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