Premium AISI 304H Stainless Steel from Gnee
Mar 23, 2026
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🧪 Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.04 - 0.10 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.75 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 18.0 - 20.0 |
| Nickel (Ni) | 8.0 - 10.5 |
| Nitrogen (N) | ≤ 0.10 |
| Iron (Fe) | Balance |
⚙️ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (min) | 515 MPa |
| Yield Strength 0.2% Offset (min) | 205 MPa |
| Elongation in 50mm (min) | 40% |
| Reduction of Area (min) | 50% |
| Hardness (Brinell) | ≤ 201 HB |
| Hardness (Rockwell B) | ≤ 92 HRB |
| Impact Energy (Charpy V-notch at 20°C) | ≥ 120 J |
| Fatigue Limit (10^7 cycles) | 240 MPa |
| Modulus of Elasticity | 200 GPa |
🔬 Physical Properties
| Property | Value |
|---|---|
| Density | 8.00 g/cm³ |
| Melting Point | 1400-1450°C |
| Thermal Conductivity (at 100°C) | 16.2 W/m·K |
| Thermal Expansion Coefficient (20-100°C) | 17.2×10-6/K |
| Specific Heat Capacity | 500 J/kg·K |
| Electrical Resistivity (at 20°C) | 0.72 µΩ·m |
| Magnetic Permeability | 1.02 (Non-magnetic) |
| Thermal Diffusivity | 4.2×10-6 m²/s |
| Curie Temperature | N/A (Austenitic) |
📏 Product Specifications
| Specification | Available Options |
|---|---|
| Product Forms | Plates, Sheets, Coils, Bars, Rods, Tubes, Pipes, Forgings |
| Plate Thickness | 6mm - 200mm |
| Sheet Thickness | 0.4mm - 6mm |
| Bar Diameter | 6mm - 300mm |
| Tube Outer Diameter | 6mm - 610mm |
| Standards | ASTM A240, A479, A312, EN 10088-2, JIS G4305, GB/T 3280 |
| Surface Finish | 2B, BA, No.4, HL (Hairline), Mirror, Pickled |
| Tolerance | ±0.1mm (thickness), ±3mm (width), ±6mm (length) |
| Edge Condition | Mill Edge, Slit Edge, Trimmed Edge |
| Heat Treatment | Solution Annealed (1040-1120°C) |
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