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Home > Stainless Steel > Stainless Steel Garde > 304 Stainless Steel
304 stainless steel, often referred to as 18/8 stainless steel, is the most versatile and widely used austenitic chromium-nickel alloy. Known for its excellent corrosion resistance, durability, and ease of fabrication, it is an ideal choice for both industrial and domestic applications. The composition, featuring approximately 18% chromium and 8% nickel, ensures robustness across a range of temperatures, making it suitable for food processing, chemical equipment, and architectural applications. Solitaire Steel & Engineering LLP, based in Khetwadi, Mumbai, India, specializes in providing high-quality 304 stainless steel in various forms such as sheets, plates, tubes, pipes, bars, angles, channels, beams, and fittings.
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| Element | Content (%) |
|---|---|
| Iron (Fe) | Balance |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Carbon (C) | ≤ 0.08 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Property | Metric | Imperial |
|---|---|---|
| Density | 8.0 g/cm³ | 0.29 lb/in³ |
| Modulus of Elasticity | 193 GPa | 28,000 ksi |
| Thermal Expansion | 16.2 µm/m°C | 9.0 µin/in°F |
| Melting Range | 1399 – 1454 °C | 2550 – 2650 °F |
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 515 – 750 MPa | 75,000 – 108,750 psi |
| Yield Strength | 205 MPa | 30,000 psi |
| Elongation at Break | 55% | 55% |
| Hardness (Rockwell B) | 70 – 80 HRB | 70 – 80 HRB |
| Property | Metric | Imperial |
|---|---|---|
| Electrical Resistivity | 0.72 µΩ·m | 28.3 µΩ·in |
| Property | Metric | Imperial |
|---|---|---|
| Thermal Conductivity (100°C) | 16.2 W/m·K | 9.4 BTU/hr·ft·°F |
| Specific Heat Capacity | 0.5 J/g·K | 0.12 BTU/lb·°F |
| Coefficient of Thermal Expansion | 16.2 µm/m°C | 9 µin/in·°F |
| Product Type | Standards | Sizes | Types | Applications |
|---|---|---|---|---|
| Sheets & Plates | ASTM A240, ASME SA240 | Thickness: 0.3mm – 150mm, Width: up to 2000mm | Hot Rolled, Cold Rolled | Food processing equipment, chemical storage tanks |
| Pipes & Tubes | ASTM A312, ASTM A269 | Diameter: 6mm – 1200mm | Seamless, Welded | Plumbing, heat exchangers, structural applications |
| Bars | ASTM A276, ASTM A479 | Diameter: up to 100mm | Round, Square, Hex | Fasteners, mechanical components |
| Angles, Channels, Beams | ASTM A484, EN 10088-3 | Custom sizes available | L-Angles, U-Channels, I-Beams | Architectural frameworks, supports |
| Fittings | ASTM A403 | Size: 1/2″ – 72″ | Buttweld, Socket Weld | Chemical, petrochemical industries |
304 stainless steel is widely applied in various industries due to its high corrosion resistance, ease of fabrication, and durability:
Compared to 316, 304 stainless steel is more affordable but slightly less resistant to chlorides. While 304 offers excellent corrosion resistance in normal environments, 316 is preferred in marine or chemical environments due to its molybdenum content, which enhances pitting resistance. However, for most general applications, 304 stainless steel provides ample durability and resistance.
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