Specify UNS S30403 when your purchase documents call for low-carbon 304 stainless plate.
Global Steel Supply & Processing
UNS S30403 · EN 1.4307 · Low-Carbon Chromium–Nickel Stainless Steel
Order 304L stainless steel plate for welded tanks, process equipment and fabrication projects. Send your dimensions, surface finish, quantity and destination for a factory quotation.
Confirm the grade, product standard, dimensions, finish and inspection documents in one purchase schedule.
| Product | 304L Stainless Steel Plate / Sheet |
|---|---|
| Grade / UNS | 304L / UNS S30403 |
| EN Reference | 1.4307 / X2CrNi18-9; confirm EN product requirements separately |
| Product Standard | ASTM A240/A240M-26 or the edition specified in your order |
| General Flat-Product Requirements | ASTM A480/A480M where applicable |
| Material Family | Low-carbon chromium–nickel austenitic stainless steel |
| Delivery Condition | Annealed / solution treated as specified |
| Surface Finish | No. 1 / 1D, 2B, BA and No. 4 by product form and gauge |
| Dimensions | Thickness × width × length from your plate schedule |
| Documents | MTC, heat traceability and agreed inspection scope |
Include the details that define your purchase and shipment.
The 0.030% maximum carbon limit helps reduce carbide precipitation during welding heat input and supports resistance to intergranular corrosion in welded conditions.
Specify UNS S30403 when your purchase documents call for low-carbon 304 stainless plate.
Suitable for many welded tanks, process assemblies and fabricated stainless structures under the specified service conditions.
Austenitic chromium–nickel composition supports forming, bending and common fabrication operations.
Have a welded assembly or tank drawing? Include it with your 304L material schedule.
The table shows ASTM A240 reference limits by mass. Confirm the specified standard edition and certified heat analysis for your order.
| Element | 304L Requirement | Element | 304L Requirement |
|---|---|---|---|
| Chromium (Cr) | 18.0–20.0% | Nickel (Ni) | 8.0–12.0% |
| Carbon (C) | ≤0.030% | Manganese (Mn) | ≤2.00% |
| Silicon (Si) | ≤0.75% | Phosphorus (P) | ≤0.045% |
| Sulfur (S) | ≤0.030% | Nitrogen (N) | ≤0.10% |
| Iron (Fe) | Balance | UNS Designation | S30403 |
Chemical limits reference ASTM A240 Type 304L plate, sheet and strip. Heat analysis and product analysis acceptance follow the ordered specification.
Published minimum properties for annealed ASTM A240 Type 304L flat products at room temperature.
| Mechanical Property | 304L Reference Requirement |
|---|---|
| 0.2% Offset Yield Strength | 170 MPa minimum |
| Tensile Strength | 485 MPa minimum |
| Elongation in 50 mm | 40% minimum |
| Brinell Hardness | 201 HB maximum |
| Rockwell Hardness | 92 HRB maximum |
| Nominal Density | 7.90 g/cm³ / 7,900 kg/m³ |
State the test standard, material condition and certificate requirements in the purchase order.
Values are ASTM A240 annealed flat-product references. Final acceptance follows the ordered grade, thickness, standard edition and MTC.
Both grades belong to the austenitic chromium–nickel family. The main purchasing distinction is the specified carbon limit and corresponding minimum mechanical properties.
| Purchasing Criterion | 304 / UNS S30400 | 304L / UNS S30403 |
|---|---|---|
| Maximum Carbon | 0.08% | 0.030% |
| Chromium | 18.0–20.0% | 18.0–20.0% |
| Nickel | 8.0–10.5% | 8.0–12.0% |
| Minimum Yield Strength | 205 MPa | 170 MPa |
| Minimum Tensile Strength | 515 MPa | 485 MPa |
| Minimum Elongation | 40% | 40% |
| Common Selection Focus | General stainless fabrication | Low-carbon chemistry for welded assemblies |
Annealed minimum mechanical values reference ASTM A240. Confirm the actual grade and certification requirements before selecting material for a project.
Compare the standard 304 grade and its available plate specifications.
View 304 Stainless Steel PlateMatch the finish to your fabrication route, cleaning requirements and final component appearance.
Hot-rolled, annealed and descaled surface for many industrial plate applications.
Cold-rolled or bright-annealed finish options for applicable product gauges.
Directional surface finish for specified panels and fabricated components.
Finish availability depends on plate thickness, product form and production route. Include the required finish code or approved sample in your RFQ.
Choose 304L for your equipment design, welded fabrication and operating environment.
Processing equipment, storage components, work surfaces and fabricated housings.
Welded process tanks, vessels, equipment frames and specified production assemblies.
Tank shells, covers, access panels and welded container components.
Plate parts, covers and supporting components for specified heat-transfer equipment.
Fabricated machine panels, enclosures and process equipment structures.
Cut plate components, formed sections and joined equipment parts.
Send your operating medium, plate schedule and fabrication drawing for a project quotation.
Coordinate grade specifications, company-wide inventory and shipment requirements through one factory enquiry.
Actual annual steel production across the company product portfolio.
Company-wide steel stock supporting planned procurement. Confirm 304L availability by size and finish.
Industrial production and material-handling facilities for steel supply operations.
Production and order teams supporting specification, inspection and export coordination.
Send your required thicknesses, plate dimensions, finish and total tonnage. Our team will confirm the grade-specific supply arrangement, packing and shipment schedule for your order.
Set the material certificate, heat identification, mechanical test and dimensional inspection scope in your purchase documents.
Calculate nominal plate mass from thickness, width, length and quantity using a density of 7,900 kg/m³.
Theoretical weight for order planning. Final shipment mass follows the agreed dimensions and weighing basis.
Use the calculator for an initial estimate, then send the complete dimensions and order quantity.
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Drawing-based profiles for suitable 304L plate thicknesses and quantities.
Profile-cut blanks for selected plate sizes and order requirements.
Specified flat blanks, drilled holes and finished dimensions by enquiry.
Attach your drawing and cut list for a combined material and processing quotation.
Specify surface protection, edge guards, bundle identification, unloading requirements and destination port. Packing and shipment details are confirmed with your order.
Browse related materials and send a consolidated purchase list when your project requires several grades.
304L specifies a maximum carbon content of 0.030%, compared with 0.08% for standard 304. The lower carbon limit helps reduce carbide precipitation during welding heat input and supports resistance to intergranular corrosion in welded conditions.
ASTM A240/A240M covers chromium and chromium-nickel stainless steel plate, sheet and strip. ASTM A480/A480M provides general flat-product requirements where applicable.
Common finish requests include No. 1 / 1D, 2B, BA and No. 4. Availability depends on plate thickness, product form and production route.
Send your drawing, finished dimensions, quantity and tolerance requirements. Laser cutting, plasma cutting, drilling and cut-to-size options can be reviewed with the quotation.
Specify the MTC, heat number, chemical analysis, mechanical test results and any agreed dimensional or third-party inspection records in your RFQ.
Send your required grade, dimensions, quantity and destination. Our team will review the inquiry.