We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Stainless Steel 317L Sheets & Plates, established in 2002. We stock this molybdenum-bearing austenitic grade to ASTM A240 / ASME SA-240, cold-rolled sheets from 3.8 mm and hot-rolled plates to thicker gauges, in widths up to 2000 mm. As an ISO 9001, 14001, and 45001 certified firm, we ship worldwide with EN 10204 Type 3.1 / 3.2 certificates on request.
Stainless Steel 317L sheets and plates are flat-rolled products of a low-carbon austenitic grade alloyed with 3.0 to 4.0% molybdenum, 18 to 20% chromium, and 11 to 15% nickel. Chloride damage sets the buying case. The higher molybdenum load resists pitting and crevice corrosion where scrubber liquors, acid streams, and hot brines defeat 316L, while a 0.030% carbon ceiling protects welded seams from sensitisation.
As a reliable 317L Stainless Steel Plate supplier, our UNS S31703 stock comes from reputed primary mills. Cold-rolled sheets cover 3.8 mm to 6 mm; hot-rolled plates run 6 mm and above. Every lot ships annealed to ASTM A240, and our slitting lines trim custom widths to ±0.1 mm on request.
We provide ASTM A240 Type 317L sheets and plates ex-stock in the annealed condition, with five surface finishes, mill or slit edges.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240, ASTM A480 |
| Thickness (Sheets, CR) | 3.8 mm to 6 mm |
| Thickness (Plates, HR) | 6 mm and above |
| Width | Up to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Supply Form | Hot Rolled and Cold Rolled |
| Condition | Annealed (standard mill) |
| Surface Finish | 2B, BA (Bright Annealed), Scotch-Brite, Matte, Matte PVC |
| Edge | Mill edge, Slit edge |
Molybdenum between 3.0 and 4.0% gives 317L stainless steel plate its advantage over 316L, anchoring the passive film against chloride pitting. ASTM A240 sets the limits below.
| Element | Composition (%) |
|---|---|
| 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) | 18.0 to 20.0 |
| Nickel (Ni) | 11.0 to 15.0 |
| Molybdenum (Mo) | 3.0 to 4.0 |
| Nitrogen (N) | 0.10 max |
| Iron (Fe) | Balance |
Annealed ASME SA-240 Grade 317L plate reaches 515 MPa minimum tensile strength with 40% elongation, so it rolls and draws without cracking.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
515 MPa (75 ksi) |
|
Yield Strength (0.2% offset), minimum
|
205 MPa (30 ksi) |
|
Elongation in 50 mm, minimum
|
40% |
Purchase orders written to European, Japanese, Chinese, or Russian codes match our AISI 317L sheets and plates through the table below. Each row names one low-carbon molybdenum analysis.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S31703 |
| USA (AISI) | 317L |
| Europe (EN) | X2CrNiMo18-15-4 |
| Germany (W.Nr) | 1.4438 |
| Japan (JIS) | SUS 317L |
| China (GB) | 022Cr19Ni13Mo3 |
| Russia (GOST) | 03Х17Н14М3 |
4 industries buy the 317L SS plates we supply. Each runs chloride or acid service harsh enough to warrant the molybdenum premium over 316L in flat product.
Process plants use Alloy 317L plate in reactor shells, column sections, and acid storage tanks. Phosphoric acid concentration is a signature duty: the 3 to 4% molybdenum keeps vessel walls and tube sheets passive in liquor that thins 316L fast. Fertiliser units apply the same plate in scrubbing and evaporation service.
Coal-fired stations line flue-gas desulphurisation absorbers, ducting, and outlet stacks with 317L stainless steel sheet. Scrubber slurry pairs chlorides with condensing sulphuric acid, a combination that perforates leaner grades. Thin 317L cladding over carbon steel costs far less than solid nickel alloy and lasts between planned outages.
Refineries specify SS 317L plate into heat exchanger shells, overhead condenser sections, and sour water strippers where chlorides concentrate at dew points. Welds keep full corrosion resistance because carbon never passes 0.030%, so exchangers return to duty straight after fabrication with no post-weld anneal to schedule.
Equipment builders press 317L stainless steel sheets into process vessels, mixing tank shells, and clean-in-place circuits. Hot caustic wash-downs alternate with chloride sanitisers on these lines, and a 317L contact surface holds its finish through both. Product purity stays intact with no coating to flake into the stream.
Flat product travels cased in timber or strapped to pallets, dispatched from two warehouses with export papers in order.
| Parameter | Details |
|---|---|
| Packaging | Wooden cases, pallet packing |
| Incoterms | FOB, CIF, CFR, EXW |
| Dispatch Points | Mumbai and Taloja warehouses |
| Port | Mumbai |
| Standard Lead Time | 4 to 5 days |
| Urgent Dispatch | 2 to 3 days |
| Payment Terms | Advance, credit, LC |
| Certification | EN 10204 Type 3.1 / 3.2 mill test certificates on request |
Stainless Steel 317L Sheets & Plates price in India runs from ₹210 to ₹445 per kg, about $2.2-$4.65 per kg on export orders. Molybdenum and nickel surcharges move the base; thickness, finish, and quantity settle the rest. Both figures are indicative; call or WhatsApp us for a firm quote.
SS 317L sheets and plates are used in flue-gas desulphurisation absorbers, acid plant vessels, refinery exchangers, and food or pharmaceutical process equipment. Buyers pick the grade wherever chlorides and acids overwhelm 316L.
Standard 317 allows 0.08% carbon; 317L holds 0.030% maximum with chemistry otherwise shared. Plate buyers default to 317L for welded construction.
Yes. The 0.030% carbon cap checks chromium carbide precipitation during welding, so fabricators use 317L plate as-welded with corrosion resistance intact.
Cold-rolled 317L sheets run 3.8 mm to 6 mm and hot-rolled plates 6 mm and above, in widths up to 2000 mm. Narrower widths slit to ±0.1 mm.
We hold 2B, BA (Bright Annealed), Scotch-Brite, Matte, and Matte PVC finishes, with 2B covering most process duty.
You can buy Stainless Steel 317L Sheets & Plates in India from us at Riddhi Siddhi Impex, a supplier, stockist, and exporter since 2002. Material leaves Mumbai or Taloja within 4 to 5 days, or 2 to 3 days urgent, and get a quote within 24 hours.
