Premium AISI 309S Stainless Steel from Gnee
Mar 23, 2026
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🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 22.0 - 24.0 |
| Nickel (Ni) | 12.0 - 15.0 |
| Iron (Fe) | Balance |
| Nitrogen (N) | ≤ 0.10 |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (Room Temperature) | ≥ 515 MPa |
| Yield Strength (0.2% Offset) | ≥ 205 MPa |
| Elongation (50mm gauge) | ≥ 40% |
| Reduction of Area | ≥ 50% |
| Hardness (Brinell) | ≤ 217 HB |
| Hardness (Rockwell B) | ≤ 95 HRB |
| Impact Energy (Charpy V-notch, 20°C) | ≥ 120 J |
| Fatigue Limit (10^7 cycles) | 240 MPa |
| Modulus of Elasticity | 200 GPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 7.98 g/cm³ |
| Melting Point | 1400-1450°C |
| Thermal Conductivity (20°C) | 14.2 W/m·K |
| Thermal Conductivity (100°C) | 16.8 W/m·K |
| Thermal Expansion (20-100°C) | 14.4×10-6/K |
| Thermal Expansion (20-300°C) | 15.9×10-6/K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (20°C) | 0.78 µΩ·m |
| Magnetic Permeability | 1.02 (Non-magnetic) |
| Curie Temperature | Not applicable |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Plates, Sheets, Bars, Rods, Tubes, Pipes, Forgings, Coils |
| Plate Thickness | 6mm - 200mm |
| Sheet Thickness | 0.5mm - 6mm |
| Bar Diameter | 6mm - 300mm |
| Tube Outer Diameter | 6mm - 610mm |
| Standards Compliance | ASTM A240, A479, A276, EN 10088-2, JIS G4305, GB/T 24511 |
| Surface Finishes | 2B, BA, No.4, HL, Mirror, Pickled, Annealed |
| Dimensional Tolerance | ±0.1mm to ±0.5mm (depending on form and size) |
| Length Options | Standard lengths or cut to customer specifications |
| Edge Conditions | Mill edge, Slit edge, Sheared edge, Flame cut |
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