304 / 304L Stainless Steel Plate
Stellanox Steel supplies premium-grade 304 / 304L Stainless Steel Plates, trusted across industries for their corrosion resistance, formability, and long-lasting durability. Known as the workhorse of austenitic stainless steels, 304 and its low-carbon variant 304L are used in everything from chemical processing to architectural structures.
These plates are available in a wide range of thicknesses and finishes and are suitable for applications requiring structural strength and cleanliness in corrosive environments.
What is 304 / 304L Stainless Steel Plate?
304 Stainless Steel Plate is an austenitic alloy composed of 18% chromium and 8% nickel, offering excellent corrosion resistance and good mechanical properties. 304L, the low-carbon version of 304, minimizes carbide precipitation during welding, making it more suitable for heavy gauge welded components.
Both 304 and 304L are non-magnetic in the annealed condition and maintain their strength across a wide temperature range. They are among the most widely used stainless steel plates globally, valued for their affordability, cleanliness, and weldability.
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features of 304 / 304L Stainless Steel Plate
- Excellent Corrosion Resistance: Performs well in a wide range of environments, including atmospheric and mild chemical exposures.
- Weld-Friendly: 304L prevents intergranular corrosion during welding without post-weld annealing.
- Great Formability: Easily bent, rolled, or formed into complex shapes.
- Non-Magnetic: Ideal for applications requiring non-ferrous properties.
- Food-Grade Approved: Suitable for sanitary and hygienic applications.
- Wide Availability: Readily stocked and available in numerous thicknesses and finishes.
Specification Chart – 304 / 304L Stainless Steel Plate
| Property | Details |
|---|---|
| Standard | ASTM A240 / ASME SA240 |
| Grades | 304, 304L (UNS S30400 / S30403) |
| Thickness Range | 3.0 mm to 100 mm |
| Width | Up to 2000 mm |
| Length | 2000 mm to 6000 mm (custom on request) |
| Finishes Available | 2B, No.1, No.4, Hairline, Matte, Polished |
| Edge Condition | Sheared, Slit, or Mill Edge |
| Surface Protection | PVC / Paper Interleaf |
Chemical Composition – 304 vs. 304L Stainless Steel Plate
| Element | 304 (%) | 304L (%) |
|---|---|---|
| Chromium | 18.0 – 20.0 | 18.0 – 20.0 |
| Nickel | 8.0 – 10.5 | 8.0 – 12.0 |
| Carbon | ≤ 0.08 | ≤ 0.03 |
| Manganese | ≤ 2.0 | ≤ 2.0 |
| Silicon | ≤ 0.75 | ≤ 0.75 |
| Phosphorus | ≤ 0.045 | ≤ 0.045 |
| Sulfur | ≤ 0.030 | ≤ 0.030 |
| Iron | Balance | Balance |
Mechanical Properties – 304 / 304L Stainless Steel Plate
| Property | 304 | 304L |
|---|---|---|
| Tensile Strength (MPa) | ≥ 515 | ≥ 485 |
| Yield Strength (MPa) | ≥ 205 | ≥ 170 |
| Elongation (%) | ≥ 40 | ≥ 40 |
| Hardness (HRB) | ≤ 90 | ≤ 90 |
| Modulus of Elasticity | 193 GPa | 193 GPa |
| Density | 8.00 g/cm³ | 8.00 g/cm³ |
Equivalent Grades
| Standard | 304 | 304L |
|---|---|---|
| ASTM | 304 | 304L |
| EN | 1.4301 | 1.4307 |
| JIS | SUS 304 | SUS 304L |
| UNS | S30400 | S30403 |
| DIN | X5CrNi18-10 | X2CrNi18-9 |
304 / 304L Stainless Steel Plate Weight Chart
| Thickness (mm) | Weight per m² (kg) | Weight per 4’ x 8’ Plate (kg) |
|---|---|---|
| 3.0 | 24.00 | 58.61 |
| 5.0 | 40.00 | 97.68 |
| 6.0 | 48.00 | 117.22 |
| 8.0 | 64.00 | 156.30 |
| 10.0 | 80.00 | 195.38 |
| 12.0 | 96.00 | 234.46 |
| 16.0 | 128.00 | 312.61 |
| 20.0 | 160.00 | 390.76 |
| 25.0 | 200.00 | 488.45 |
Applications of 304 / 304L Stainless Steel Plate
- Food processing & kitchen equipment
- Chemical and pharmaceutical vessels
- Architectural wall panels and supports
- Brewery and dairy tanks
- Marine components above waterline
- Oil & gas filtration and storage units
- Cleanroom and lab enclosures
Benefits of 304 / 304L Stainless Steel Plate
- Long-lasting corrosion resistance in daily and industrial environments
- Low maintenance, smooth, and sanitary finish
- Easier fabrication and better weld performance with 304L
- Competitive price-to-performance ratio
- Suitable for both structural and hygienic applications
- Globally available and fully recyclable
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