304L S30403 Hot Rolled Stainless Steel Plate
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What is 304L S30403 Hot Rolled Stainless Steel Plate?
304L S30403 Hot Rolled Stainless Steel Plate is a low-carbon austenitic stainless steel plate designed for applications requiring excellent corrosion resistance, good strength, and superior weldability. As a hot rolled product, it offers cost efficiency, structural stability, and versatile processing capability, making it widely used in construction, chemical, food, and general industrial projects.
Gnee supplies high-quality 304L hot rolled stainless steel plates with stable chemistry, controlled thickness tolerances, and full material traceability to meet both domestic and international project requirements.


What are the differences between 304L hot-rolled stainless steel plate and 304 stainless steel?
Compared to standard 304 stainless steel, 304L (S30403) has a lower carbon content (≤0.03%), which significantly reduces the risk of intergranular corrosion after welding. Therefore, it is an ideal choice for manufacturing structural components, welded parts, and pressure vessels.
304L / S30403 Hot Rolled Stainless Steel Plate Specifications
| Item | Description |
|---|---|
| Material Grade | 304L Stainless Steel |
| UNS No. | S30403 |
| Product Type | Hot Rolled Stainless Steel Plate |
| Thickness Range | 3.0 mm – 50 mm (custom available) |
| Width | Up to 2000 mm |
| Length | Up to 6000 mm |
| Surface Finish | No.1 / Pickled |
| Standard | ASTM A240 / ASME SA240 / EN 10088 |
| Delivery Condition | Solution annealed |
| Certifications | MTC, PMI, SGS, BV (on request) |
What thicknesses are available for 304L hot rolled plates?
304L hot rolled stainless steel plates are typically available in thicknesses ranging from about 3.0 mm up to 100 mm, with standard widths up to 2,000 mm and custom sizes available.
Click to get the SS 304L plate inventory list.
Chemical Composition of 304L Stainless Steel (Typical, wt.%)
| Element | Content |
|---|---|
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 10.5 |
| Carbon (C) | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Tensile Strength | 485 – 620 MPa |
| Yield Strength (0.2%) | ≥ 170 MPa |
| Elongation | ≥ 40% |
| Hardness | ≤ 90 HRB |
| Impact Toughness | Good at ambient temperature |
Is 304L hot rolled stainless steel plate suitable for outdoor use?
Yes, 304L hot rolled stainless steel plates are suitable for outdoor use in mild to moderately corrosive environments, as their chromium content (~18–20%) provides good resistance to atmospheric corrosion.
Can 304L hot rolled plates be cut and welded easily?
Yes, 304L hot rolled plates can be easily cut and welded using common methods such as plasma cutting, laser cutting, TIG, and MIG welding, with the low carbon content (≤0.03%) reducing the risk of intergranular corrosion after welding.
To better serve international buyers, GNEE offers flexible payment methods, including T/T (30% down payment, 70% paid before shipment), sight letter of credit (L/C), and DP/DA payment options for long-term partners; we use seaworthy wooden crates or pallets for packaging, providing moisture-proof, rust-proof, and edge protection measures, and clearly marking the heat number and dimensions on the plates; we guarantee efficient delivery, with in-stock 304 plates shipped within 7-10 days and custom sizes shipped within 15-25 days; we provide complete factory test certificates (MTC 3.1) and have extensive global export experience covering the Middle East, Europe, the United States, and Southeast Asia.








