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Stainless Steel 304/304L Sheet, Plate & Coil are popular austenitic stainless steel products known for their strength, cost efficiency, and versatility. SS 304/304L is a chromium-nickel-manganese alloy designed to be a lower-cost alternative to grades like 304. It offers a perfect balance of hardness, corrosion resistance, and formability for both industrial and decorative applications.
SS 304/304L Sheets and Plates are manufactured from high-quality raw materials that comply with ASTM A240 / ASME SA240 standards. These materials exhibit excellent toughness, good drawability, and high resistance to wear and abrasion. Stainless Steel 304/304L can be easily fabricated, welded, and polished, making it ideal for products requiring durability and a clean finish.
The chemical composition of Stainless Steel 304/304L includes about 16–18% chromium, 4–6% nickel, and up to 7.5% manganese. This unique composition enhances its strength and gives it good resistance to oxidation and mild corrosion. Though not as corrosion-resistant as 304 or 316, SS 304/304L performs well in mildly corrosive environments and indoor applications.
Stainless Steel 304/304L Coils are available in both hot-rolled and cold-rolled forms, with a wide range of thicknesses and finishes such as 2B, BA, and No.4. These coils are often used to produce kitchen utensils, decorative panels, railway coaches, sinks, and appliances. Their bright, attractive surface finish also makes them suitable for architectural and interior design applications.
SS 304/304L Sheets and Plates offer an excellent combination of strength and toughness even at low temperatures. They are known for their good work-hardening ability, allowing manufacturers to form or bend them easily without cracking. The alloy’s mechanical properties make it a reliable choice for light structural components and machinery parts.
Stainless Steel 304/304L Sheet, Plate & Coil are widely used in industries such as construction, food processing, automotive, and furniture manufacturing. Their aesthetic appearance and cost-effectiveness make them a preferred material for kitchenware, countertops, appliances, and other decorative purposes where corrosion exposure is minimal.
Welding and fabrication of SS 304/304L can be done using standard methods such as TIG, MIG, or resistance welding. It does not require preheating before welding, though post-weld annealing may be applied to restore optimal corrosion resistance. The material can also be cut, drilled, and polished to achieve specific dimensions and finishes as per client requirements.
At reputable suppliers, Stainless Steel 304/304L Sheets, Plates & Coils are supplied with Mill Test Certificates (MTC) confirming compliance with EN 10204 3.1 standards. Each product undergoes stringent quality checks for mechanical strength, dimensional accuracy, and surface finish. Protective coatings and packaging ensure safe transportation and long-lasting quality.
Specification Table
| Property | 304 | 304L |
|---|---|---|
| UNS Number | S30400 | S30403 |
| Density | 8.0 g/cm³ | 8.0 g/cm³ |
| Melting Point | 1400–1450 °C | 1400–1450 °C |
| Yield Strength | 215 MPa | 170 MPa |
| Tensile Strength | 505 MPa | 485 MPa |
| Elongation | 40% | 45% |
| Hardness (Brinell) | 123 HB | 95 HB |
| Corrosion Resistance | Excellent | Excellent |
| Forms Available | Sheet, Plate, Coil | Sheet, Plate, Coil |
| Finish | 2B, BA, HR, No.4 Brushed | 2B, BA, HR, No.4 Brushed |
| Standards | ASTM A240 / EN 10088 | ASTM A240 / EN 10088 |
Chemical Composition (Typical ranges for SS304/304L)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | 304 (%) | 304L (%) |
|---|---|---|
| Carbon (C) | 0.08 max | 0.03 max |
| Chromium (Cr) | 18.0–20.0 | 18.0–20.0 |
| Nickel (Ni) | 8.0–10.5 | 8.0–12.0 |
| Manganese (Mn) | 2.0 max | 2.0 max |
| Silicon (Si) | 1.0 max | 1.0 max |
| Phosphorus (P) | 0.045 max | 0.045 max |
| Sulfur (S) | 0.03 max | 0.03 max |
| Nitrogen (N) | 0.10 max | 0.10 max |
| Iron (Fe) | Balance | Balance |
Mechanical Properties (Typical)
| Property | 304 | 304L |
|---|---|---|
| Yield Strength (MPa) | 215 | 170 |
| Tensile Strength (MPa) | 505 | 485 |
| Elongation (%) | 40 | 45 |
| Hardness (Brinell HB) | 123 | 95 |
| Modulus of Elasticity (GPa) | 193 | 193 |
| Poisson's Ratio | 0.29 | 0.29 |
| Hardness (Rockwell B) | 92 | 79 |
Equivalent Grades
| Standard | 304 | 304L |
|---|---|---|
| UNS | S30400 | S30403 |
| EN / DIN | 1.4301 | 1.4306 |
| JIS | SU304 | SU304L |
| GB / China | 06Cr19Ni10 | 06Cr19Ni10L |
| AFNOR / France | X5CrNi18-10 | X2CrNi18-9 |
| BS / UK | 304S15 | 304S11 |
| ISO | 4301/1 | 4301/2 |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| 0.5 | 1000 | 2000 | 4.0 |
| 1.0 | 1000 | 2000 | 8.0 |
| 1.5 | 1250 | 2500 | 12.0 |
| 2.0 | 1250 | 2500 | 16.0 |
| 3.0 | 1500 | 3000 | 24.0 |
| 4.0 | 1500 | 3000 | 32.0 |
| 6.0 | 2000 | 6000 | 48.0 |
| 8.0 | 2000 | 6000 | 64.0 |
| 10.0 | 2000 | 6000 | 80.0 |
| 12.0 | 2000 | 6000 | 96.0 |
Common Types Of Sheet Plates
Shim Sheet Plate
Perforated Sheet Plate
Chequered Plate
Coil
Strips
Foil
Hot Rolled Sheet Plates
Cold Rolled Plate
Matt PVC Sheet Plate
Frequently Asked Questions (FAQ)
What is Stainless Steel 304 and 304L?
Stainless Steel 304 is a widely used austenitic stainless steel known for excellent corrosion resistance, mechanical properties, and ease of fabrication. 304L is a low-carbon variant which reduces the risk of sensitization during welding.
What are the typical applications of 304/304L?
Used in kitchen equipment, food processing, chemical processing, architectural panels, storage tanks, heat exchangers, and general fabrication.
What forms are available?
Sheets, plates, and coils in various thicknesses and finishes like 2B, BA, HR, and No.4 brushed.
What are the standard specifications?
ASTM A240 / EN 10088 standards are commonly followed for 304 and 304L stainless steels.
What is the difference between 304 and 304L?
304L has a lower carbon content (max 0.03%) compared to 304 (max 0.08%), which makes it less prone to carbide precipitation during welding.
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