We are Riddhi Siddhi Impex, a Mumbai-based manufacturer and supplier of Stainless Steel 317L strips, established in 2002. We precision slit UNS S31703 strip to ASTM A240 / ASME SA-240 from a 3 mm width, held to ±0.1 mm. As an ISO 9001, 14001, and 45001-certified firm, we hold ready stock and issue EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Stainless Steel 317L strip is a low-carbon austenitic grade carrying 3.0 to 4.0% molybdenum, roughly a full point above 316L. That extra molybdenum lifts pitting and crevice resistance in acidic chloride media, so these stainless steel strip hold up in flue-gas scrubbers and pulp bleaching lines. Carbon is at 0.030% maximum, which curbs sensitisation and keeps welded strip assemblies free of intergranular attack.
As a trusted 317L stainless steel strip supplier and manufacturer, every strip leaves our Mumbai lines slit from parent coil sourced from reputed primary mills, in gauges from 0.03 mm to 5 mm. We supply the grade cold-rolled and annealed to ASTM A240, in any width down to 3 mm, under a documented quality system from incoming coil to dispatch.
We provide ASTM A240 Type 317L strip in the annealed soft condition, with five surface finishes and four edge options.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240, ASTM A480 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Supply Form | Cold Rolled |
| Condition | Annealed (Soft) |
| Surface Finish | BA (Bright Annealed), 2B, Scotch-Brite, Matte, Matte PVC |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
Molybdenum defines this grade. At 3.0 to 4.0%, it stabilises the passive film against chloride breakdown far better than the 2 to 3% in 316L, while 18 to 20% chromium and 11 to 15% nickel hold the austenitic structure. The full ASTM A240 composition appears 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 SA-240 Grade 317L strip starts at 515 MPa minimum tensile strength with 205 MPa minimum yield and 40% elongation, so it forms and punches cleanly. The grade works hard under cold rolling but ships soft as standard, with harder tempers available by agreement.
| Property | Value (Minimum) |
|---|---|
|
Tensile Strength
|
515 MPa (75 ksi) |
|
Yield Strength (0.2% offset)
|
205 MPa (30 ksi) |
|
Elongation in 50 mm
|
40% |
|
Hardness (Brinell)
|
217 HBW max |
|
Hardness (Rockwell B)
|
95 HRB max |
International buyers can cross-reference UNS S31703 strip against their regional standard using the designations below.
| 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) | 03Х16Н15М3 |
These 4 industries consistently specify the Type 317L strip we slit. In each, buyers pay the molybdenum premium for chloride and acid resistance that 304L and 316L cannot match at the same thickness.
Chemical plants form 317L Stainless Steel strip into vessel linings, dosing bands, and heat-exchanger parts handling sulphuric, phosphoric, and acetic acid streams. The molybdenum resists pitting where warm chlorides concentrate, and the low carbon ceiling keeps welded seams free of carbide precipitation.
Power stations use Stainless Steel 317L Slitting Coil in condenser parts and flue-gas desulphurisation systems, where scrubber liquors carry chlorides and sulphur compounds. The grade tolerates the acidic condensate that attacks leaner stainless, extending service life on absorber internals and ducting.
Pulp mills specify 317L stainless steel strip for bleach plant washers, digester fittings, and liquor handling parts exposed to chloride-bearing bleaching chemicals. Higher molybdenum and nickel hold the passive film through wet-dry cycling, so thin slit sections outlast 316L in the same duty.
Pharmaceutical and food equipment builders use SS 317L strip where product contact demands a clean surface and repeated caustic cleaning. The low carbon content resists sensitisation at weld joints, and the alloy sheds no coating into process streams, suiting mixers, filling machinery, and transfer equipment.
Orders are packed from our Mumbai and Taloja warehouses, in wooden cases or on pallets.
| Parameter | Details |
|---|---|
| Packaging | Wooden cases, pallet packing |
| Incoterms | FOB, CIF, CFR, EXW Mumbai |
| Dispatch Points | Mumbai and Taloja warehouses |
| 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 on request |
Stainless Steel 317L Strips price in India runs around INR 400 to 550 per kg, roughly USD 4.2 to 5.8 for export buyers. The grade is above 316L on its higher molybdenum and nickel, both priced based on volatile exchange rates. Thickness, width, finish, and volume shift the figure. Call or WhatsApp us for today's rate.
317L strip carries 3 to 4% molybdenum against 2 to 3% in 316L, plus higher nickel. That richer chemistry gives 317L stronger resistance to pitting and crevice attack in acidic, chloride-heavy service.
The "L" marks a 0.030% maximum carbon content against 0.08% for standard 317. Lower carbon reduces carbide precipitation during welding, so 317L strip keeps its intergranular corrosion resistance in fabricated assemblies.
SS 317L strip runs from 0.03 mm to 5 mm thick and slits to any width between 3 mm and 2000 mm, held to ±0.1 mm. Thinner than 0.03 mm falls under our 317L foil range.
Stainless Steel 317L winding strips ship annealed and soft as standard stock. We can cold roll to a harder condition against a tensile and hardness specification agreed at the order.
Finishes include BA, 2B, Scotch-Brite, Matte, and Matte PVC. Slit, mill, deburred, and round edges suit winding and gasket work.
You can buy Stainless Steel 317L strips in India from us at Riddhi Siddhi Impex. Our Mumbai and Taloja warehouses hold S31703 strip ready for dispatch in 4 to 5 days, or 2 to 3 days for urgent orders. Call or WhatsApp us; quotations will be provided within 24 hours.
