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Technical Specifications
Product Overview
Metallurgical Characteristics
JIS SUS304L is an austenitic stainless steel with a face-centered cubic crystal structure that provides excellent ductility and formability. The low carbon content (≤ 0.030%) minimizes carbide precipitation during welding and high-temperature exposure, ensuring superior intergranular corrosion resistance. The balanced chromium-nickel composition creates a stable austenitic matrix that remains non-magnetic in the annealed condition.
Heat Treatment Process
MetalZenith employs controlled solution annealing at 1010-1120°C followed by rapid cooling to achieve optimal microstructure. Our continuous annealing lines feature precise temperature control (±5°C) and protective atmosphere processing to prevent oxidation and ensure consistent mechanical properties. Post-annealing pickling and passivation treatments enhance surface corrosion resistance.
Manufacturing Process Excellence
Our integrated production process begins with electric arc furnace melting followed by AOD refining to achieve precise chemical composition. Continuous casting produces high-quality billets that undergo hot rolling, cold rolling, and precision finishing. Advanced process control systems monitor temperature, reduction ratios, and surface quality throughout production to ensure consistent material properties.
Quality Standards & Testing
All JIS SUS304L products undergo comprehensive testing including chemical analysis by optical emission spectroscopy, mechanical property evaluation per JIS Z2241, and corrosion resistance testing according to ASTM A262. Our quality management system ensures full traceability from raw materials to finished products, with complete mill test certificates provided for every shipment.
🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 18.00 - 20.00 |
| Nickel (Ni) | 8.00 - 12.00 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 520 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation (50mm gauge) | ≥ 40% |
| Hardness (Brinell) | ≤ 200 HB |
| Hardness (Rockwell B) | ≤ 90 HRB |
| Impact Energy (Charpy V-notch, 20°C) | ≥ 120 J |
| Young's Modulus | 200 GPa |
| Fatigue Limit (107 cycles) | 240 MPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density (20°C) | 8.00 g/cm³ |
| Melting Point | 1400-1450°C |
| Thermal Conductivity (20°C) | 16.2 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 17.3×10-6/K |
| Specific Heat Capacity (20°C) | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.72 µΩ·m |
| Magnetic Permeability | 1.02 (Non-magnetic) |
| Thermal Diffusivity (20°C) | 4.05×10-6 m²/s |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Sheets, Plates, Coils, Bars, Rods, Tubes, Pipes |
| Sheet Thickness | 0.3mm - 6.0mm |
| Plate Thickness | 6.0mm - 100mm |
| Bar Diameter | 6mm - 300mm |
| Tube Outer Diameter | 6mm - 219mm |
| Standards Compliance | JIS G4303, ASTM A240, EN 10088-2 |
| Surface Finishes | 2B, BA, No.4, HL (Hairline), Mirror |
| Dimensional Tolerance | ±0.02mm to ±0.5mm (depending on form) |
| Edge Condition | Mill Edge, Slit Edge, Trimmed Edge |
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Our Advantages in Processing JIS SUS304L
Advanced AOD Refining Technology
MetalZenith employs cutting-edge Argon Oxygen Decarburization (AOD) technology to achieve ultra-low carbon content (≤ 0.030%) while maintaining optimal chromium and nickel levels. Our proprietary refining process ensures superior chemical homogeneity and eliminates carbide precipitation, resulting in enhanced corrosion resistance and weldability compared to conventional production methods.
Comprehensive Quality Control System
Our integrated quality management system features real-time spectroscopic monitoring, automated dimensional inspection, and advanced surface quality assessment. Every coil and batch undergoes rigorous testing including intergranular corrosion testing (ASTM A262), ensuring consistent material properties and compliance with JIS G4303 standards throughout the entire production process.
Flexible Customization & Global Supply
MetalZenith offers extensive customization capabilities including precision cold rolling, specialized surface finishes (2B, BA, No.4), and custom dimensional tolerances. Our global distribution network ensures reliable delivery worldwide, while our technical support team provides comprehensive material selection guidance and application engineering services to optimize performance for specific customer requirements.
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