We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Stainless Steel 317L Coils, established in 2002. Our SS 317L coils meet ASTM A240 / ASME SA-240 (UNS S31703), stocked from 0.03 mm to 5 mm thick and slit to any width up to 2000 mm. As an ISO 9001, 14001, and 45001 certified company, we issue EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Stainless Steel 317L Coils are flat-rolled coil stock of a low-carbon austenitic grade holding a full percentage point more molybdenum than 316L, at 3.0 to 4.0%. Chloride-heavy acid service is where that margin pays. Chromium at 18 to 20% and nickel at 11 to 15% keep the austenite stable and non-magnetic, while the 0.030% carbon ceiling stops carbide precipitation when fabricators weld straight off the coil. Density is near 7.99 g/cm³.
As a reliable Stainless Steel 317L Coils supplier, we source Stainless Steel coil from reputed primary mills, hold it in ready stock, and slit it to ±0.1 mm. Material uncoils flat into press feeders and tube mills, annealed to ASTM A240, with coil ID between 150 mm and 610 mm.
We provide ASTM A240 Type 317L Coils in annealed condition, hot rolled, and cold rolled, with five surface finishes and four edge options across the ranges below.
| 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 |
| Coil ID | 150 mm to 610 mm |
| Coil OD | Up to 1800 mm |
| Condition | Annealed (Soft) |
| Supply Forms | Hot rolled, Cold rolled |
| Surface Finish | 2B, BA (Bright Annealed), Matte, Matte PVC, Scotch-Brite |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
Molybdenum is between 3.0 and 4.0%; it anchors the passive film against pitting in acidic chloride media that defeat 316L. ASTM A240 fixes 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 UNS S31703 coils start at a 515 MPa minimum tensile strength with 40% elongation, so blanks draw and roll-form cleanly from the uncoiler. We stock the annealed condition only.
| 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% |
Buyers working to European, Japanese, Chinese, or Russian specifications can match AISI 317L coils from our inventory using the table below. These designations are the recognised equivalents of 317L. Chemistry limits vary slightly between standards, so confirm the exact grade required on your order.
| 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 |
Coil-fed fabrication sets the buying pattern for this grade. These 4 industries specify the 317L stainless steel coils we supply, each running acid or chloride duty past what 316L tolerates.
Tube mills feed 317L SS coil directly into forming rolls and TIG or laser welding stations to produce welded pipe for chemical transfer lines. Because carbon never passes 0.030%, the weld seam resists carbide precipitation. Tubes made to as-welded specifications such as ASTM A778 need no post-weld anneal, while pressure specifications like ASTM A249 and A312 still require heat treatment after welding.
FGD contractors uncoil Alloy 317L Coils into absorber wall panels, ducting segments, and outlet stack liners. Scrubber slurry pairs chlorides with condensing sulphuric acid. The 3 to 4% molybdenum keeps the surface passive through that mix, so linings last between planned plant outages.
Tank builders roll 317L coil into shell courses and inner linings for acid storage and dosing vessels. Phosphoric and sulphuric streams thin leaner walls faster. Coil-fed construction cuts the number of seams, and the low-carbon analysis protects each circumferential weld from intergranular attack.
Press shops run 317L Stainless Steel Coils through blanking and stamping tools for heat-exchanger plates, pump internals, and equipment panels. Annealed stock at 40% elongation forms deep profiles without cracking. Slit width held to ±0.1 mm keeps automatic coil feeders running without mid-shift adjustment.
Coils leave from our Mumbai and Taloja warehouses wrapped, strapped, and cased for sea transit.
| 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 Coils price in India is around ₹255-₹600 per kg, roughly $3.72 to $6.57 per kg for export buyers. Coil is the least-processed 317L form we stock, so it prices below slit strip. Molybdenum surcharges, gauge, finish, and quantity shift the figure. Call or WhatsApp us for a firm rate.
We offer SS 317L Coils from 0.03 mm to 5 mm thick and 3 mm to 2000 mm wide, slit to ±0.1 mm on our own lines.
Our Type 317L Coils conform to ASTM A240 / ASME SA-240, with ASTM A480 governing flat-rolled tolerances. EN 10204 Type 3.1 or 3.2 certificates accompany shipments on request.
317L SS coils are suitable for welded pipe and tube making because the 0.030% carbon maximum prevents carbide precipitation at the weld seam. Mills run them as-welded with full corrosion resistance.
We dispatch 317L stainless steel coils within 4 to 5 days, or 2 to 3 days on urgent orders.
Yes, we export Stainless Steel 317L Coils to every market, shipping FOB, CIF, CFR, or EXW through Mumbai port.
You can buy Stainless Steel 317L Coils in India from us at Riddhi Siddhi Impex. Ready S31703 coil stock sits in our Mumbai and Taloja warehouses, and we return quotes within 24 hours.
