We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Stainless Steel 304L Sheets & Plates, established in 2002. Our warehouses carry this low-carbon austenitic flat product to ASTM A240 / ASME SA-240, from 3.8 mm and above in thickness and in widths up to 2000 mm. As an ISO 9001, 14001, and 45001-certified company, we maintain a supply capacity of 400-500 tons monthly and export to 60+ countries. We also provide EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Stainless Steel 304L sheets and plates are flat-rolled stock of the low-carbon 18-8 austenitic grade. Carbon is limited to 0.030% maximum, compared with 0.08% for standard 304, so welded joints carry no grain-boundary carbide and resist intergranular corrosion without post-weld annealing. Chromium at 17.5-19.5% builds the self-healing passive film, while 8.0-12.0% nickel keeps the structure ductile through forming and welding. Fabricators reach for UNS S30403 whenever heavy welding meets corrosive service. Stainless Steel 304L sheets and plates are typically used to fabricate chemical processing tanks, food processing equipment, and heavy welded structures.
As a reliable stainless steel 304L plates supplier, we buy these stainless steel sheets and plates from reputed primary mills and hold them ready. Cold-rolled sheets cover 3.8 mm to 6 mm; hot-rolled plates continue from 6 mm and above. Every consignment ships annealed, with EN 10204 Type 3.1 / 3.2 mill test certificates on request.
We provide SA 240 Type 304L sheets and plates in the annealed mill condition, with six surface finishes, and custom widths held to ±0.1 mm from ready Mumbai and Taloja stock.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240, AMS 5511 |
| Thickness (Sheets, CR) | 3.8 mm to 6 mm |
| Thickness (Plates, HR) | 6 mm and above |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Annealed (standard mill) |
| Surface Finish | 2B, BA (Bright Annealed), Scotch-Brite, Matte, Matte PVC, Skin Pass |
| Supply Forms | Hot rolled and Cold rolled |
| Edge | Mill edge |
| Form | Sheets, Plates |
The 0.030% carbon ceiling defines this analysis. The low carbon content limits chromium carbide formation, keeping the 17.5-19.5% chromium available to maintain the passive film beside welds.
| Element | Composition (% by weight) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulphur (S) | 0.030 max |
| Silicon (Si) | 0.75 max |
| Chromium (Cr) | 17.5-19.5 |
| Nickel (Ni) | 8.0-12.0 |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
Annealed A240 Grade 304L pairs 485 MPa minimum tensile strength with a 170 MPa yield point, 35 MPa under standard 304. Designers account for the lower yield strength compared with standard 304 while retaining excellent ductility.
| Property | Value (Annealed) |
|---|---|
|
Tensile Strength, minimum
|
485 MPa (70 ksi) |
|
Yield Strength (0.2% offset), minimum
|
170 MPa (25 ksi) |
|
Elongation in 50 mm, minimum
|
40% |
|
Hardness, maximum
|
201 HBW / 92 HRB |
Buyers working to European, Japanese, Chinese, or Russian codes can match SS 304L plate through the designations below. Every listing points to the same low-carbon austenitic analysis.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S30403 |
| Europe (EN) | X2CrNi18-9 |
| Germany (W.Nr) | 1.4307 |
| Japan (JIS) | SUS304L |
| China (GB) | 022Cr19Ni10 |
| Russia (GOST) | 03Х18Н11 |
These 5 industries widely utilise the SS 304L sheets & plates we dispatch. Each picks the grade where welded fabrication meets corrosive duty and seams must stay carbide-free in service.
Dairies and beverage plants weld storage silos, mixing vessels, and hygienic wall panels from 304L SS sheets. Seams survive acidic products and daily caustic wash-downs without sensitising, so product-contact welds stay smooth, crevice-free, and easy to sanitise for years.
Process fabricators order ASTM A240 Type 304L plate for reactors, columns, and storage tanks in nitric acid and organic service. Multi-pass welding leaves the heat-affected zone corrosion resistant, removing the solution anneal a standard 304 vessel would otherwise need.
Pharma equipment builders specify 304L stainless steel plate for purified water tanks, reactor bodies, and cleanroom panelling. The grade takes orbital welding and electropolishing cleanly, and welds keep passing surface inspection after repeated steam-in-place sterilisation cycles.
Architects clad facades, canopies, columns, and welded structural trim with cold-rolled 304L sheets. Site welding needs no follow-up heat treatment, while Scotch-Brite and Matte finishes keep large panel runs uniform in appearance across a building face.
Power stations put 304 Low Carbon plate into condenser waterboxes, flue-gas ducting, and demineralised water tanks. Welded joints tolerate wet, oxidising conditions, and the restricted carbon prevents intergranular attack through years of shutdown and start-up thermal cycling.
Material leaves flat-packed in wooden cases or on pallets, documented and ready for sea transport.
| Parameter | Details |
|---|---|
| Packaging | Wooden cases, pallet packing |
| Incoterms | FOB, CIF, CFR, EXW Mumbai |
| Dispatch Points | Mumbai and Taloja warehouses |
| Standard Lead Time | 4-5 days |
| Urgent Dispatch | 2-3 days |
| Payment Terms | Advance, credit, LC |
| Certification | EN 10204 Type 3.1 / 3.2 mill test certificates on request |
304L stainless steel plate price in India is currently at ₹200-₹280 per kg, roughly $2.1-$2.9 per kg for export orders. Nickel market movement, thickness, finish, and order volume decide the final figure. Call or WhatsApp our team for the current rate.
We stock Stainless Steel 304L Sheets & Plates from 3.8 mm and above in widths 3 mm to 2000 mm. Sheets run cold rolled to 6 mm; plates run hot rolled beyond that.
The difference between Stainless Steel 304 and 304L sheets and plates is carbon. 304L caps it at 0.030% against 0.08%, trading a slightly lower yield strength for immunity to intergranular corrosion after welding.
Yes, Stainless Steel 304L Sheets & Plates weld by TIG, MIG, and arc processes without post-weld annealing. The low carbon level blocks chromium carbide precipitation in the heat-affected zone, so joints keep full corrosion resistance as welded.
Stainless Steel 304L Sheets & Plates are covered by ASTM A240 / ASME SA-240 under UNS S30403, with EN 1.4307 as the European equivalent. We certify every dispatch to the ordered specification.
You can source Stainless Steel 304L Sheets & Plates in India from us at Riddhi Siddhi Impex, supplier, stockist, and exporter since 2002. Our Mumbai and Taloja warehouses dispatch in 4-5 days, or 2-3 days urgent. Phone or WhatsApp us; quotes will reach you within 24 hours.
