We are Riddhi Siddhi Impex, a Mumbai-based manufacturer and supplier of Stainless Steel 316L Strips, established in 2002. Our plant slits UNS S31603 strip to ASTM A240 / ASME SA-240 in gauges from 0.03 mm to 5 mm. As an ISO 9001, 14001, and 45001 certified firm, we maintain a ready stock that comes with EN 10204 Type 3.1 / 3.2 certificates on request.
Stainless Steel 316L strip is a low-carbon austenitic flat product carrying 16 to 18% chromium, 10 to 14% nickel, and 2 to 3% molybdenum. Carbon stops at 0.030%. That ceiling protects welded strip assemblies from sensitisation without any post-weld anneal, while the molybdenum defends the passive film where chlorides would pit plain 304, which is why tube mills and marine fabricators specify the grade so often.
At our Mumbai warehouse, 316L stainless steel strips begin as parent coil from established primary mills and pass through our own slitting lines. We keep the material annealed and soft to ASTM A240, slit it anywhere between 3 mm and 2000 mm wide, and dispatch with mill test certificates when requested.
We provide SS 316L strips in the annealed soft condition to ASTM A240, with five surface finishes and four edge options from Mumbai stock.
| 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 (CR) |
| Condition | Annealed (Soft) |
| Surface Finish | BA (Bright Annealed), 2B, Scotch-Brite, Matte, Matte PVC. |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
A240 caps it at 0.030% for UNS S31603, guarding weld seams on formed parts, while 2.00 to 3.00% molybdenum supplies the pitting resistance.
| 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) | 16.0 to 18.0 |
| Nickel (Ni) | 10.0 to 14.0 |
| Molybdenum (Mo) | 2.00 to 3.00 |
| Nitrogen (N) | 0.10 max |
Annealed Stainless Steel 316L slit coil pairs have a minimum tensile strength of 485 MPa with 40% elongation, so it stamps and draw without edge cracking. A240 assigns no temper ladder.
| Property | Value (Minimum) |
|---|---|
|
Tensile Strength
|
485 MPa (70 ksi) |
|
Yield Strength (0.2% offset)
|
170 MPa (25 ksi) |
|
Elongation in 50 mm
|
40% |
|
Hardness (Brinell)
|
217 HBW max |
|
Hardness (Rockwell B)
|
95 HRB max |
Overseas buyers match UNS S31603 strips to their home standard through the designations below. Each row names the same low-carbon austenitic chemistry.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S31603 |
| Europe (EN) | X2CrNiMo17-12-2 |
| Germany (W.Nr) | 1.4404 |
| Japan (JIS) | SUS 316L |
| China (GB) | 022Cr17Ni12Mo2 |
| France (AFNOR) | Z3CND17-12-02 |
These 4 industries specify the SS316L strip leaving our slitting lines. Each one pays the molybdenum premium because salt, process acids, or hot cleaning chemicals would pit a leaner stainless grade.
Stainless Steel 316L winding strips are used in hose clamps, banding, cable ties, and deck fittings that live in salt spray. Chloride pitting ruins 304 clamps within seasons at sea. Molybdenum holds the passive layer intact, and widths from 3 mm suit narrow clamp bands straight off the coil.
Hygienic tube mills roll 316L strip into welded tube for dairies, breweries, and drug plants. The 0.030% carbon ceiling keeps the weld seam resistant to intergranular attack through repeated steam sterilisation. Mixer panels, filler parts, and washdown guards take the same strip in 2B or BA finish.
Heat exchanger builders press 1.4404 strips into corrugated plates and wind them into fin stock for coolers handling brackish or treated water. Thin gauges down to 0.03 mm form tightly and won't tear. Consistent thickness across the coil keeps plate packs seating evenly under compression.
Chemical plants specify ASTM A240 316L strips for dosing bands, vessel trim, and jacketing in sulphuric and phosphoric service. Low carbon keeps welded fittings free of carbide precipitation at seams. Where streams run hotter chlorides, our Stainless Steel 317L strips carry a full point more molybdenum.
Consignments leave from Mumbai and Taloja, crated in wood or strapped to pallets for sea freight.
| 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 316L Strips price in India ranges from ₹120-₹335 per kg, near $4.60-$6.20 for export buyers. Nickel and molybdenum rates drive the base figure. Thickness, width, finish, and volume settle the final number, with bulk discounts. Request a quote for the current 316L strip pricing.
We slit SS 316L strips from 0.03 mm to 5 mm thick and to any width between 3 mm and 2000 mm, with width held within ±0.1 mm.
ASTM A240 / ASME SA-240 covers the chemistry and mechanicals of 316L strip, with ASTM A480 covering tolerances and testing.
316L strips limit carbon to 0.030% against 0.08% in standard 316. Lower carbon stops chromium carbides from forming at weld seams, so fabricated parts keep their corrosion resistance as welded.
Finish options on 316L SS strips cover BA, 2B, Scotch-Brite, Matte, and Matte PVC.
Riddhi Siddhi Impex is a reliable 316L stainless steel strip supplier in Mumbai and Taloja for dispatch in 4 to 5 days, or 2 to 3 days urgently. Phone or WhatsApp us; a quote will reach you within 24 hours.
