We are Riddhi Siddhi Impex, a Mumbai-based Stainless Steel 310S Strips supplier and manufacturer, established in 2002. We slit this heat-resistant grade to ASTM A240 / ASME SA-240 and AMS 5521, from 0.03 mm to 5 mm thick. Our ISO 9001, 14001, and 45001-certified company holds ready stock, with a monthly supply capacity of 400-500 tonnes, and issues EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Stainless Steel 310S strips are flat-rolled lengths of an austenitic chromium-nickel grade built for high-temperature service. The alloy carries 24.0-26.0% chromium and 19.0-22.0% nickel, which lets it resist oxidation in dry air up to 1093 °C (2000 °F). Carbon is at 0.08% maximum, well under the 0.25% ceiling of standard 310, so the welded strip keeps its grain boundaries clean. Density is 8.0 g/cm³, and toughness holds down to cryogenic temperatures. It is commonly used in heat exchangers and food processing equipment.
We slit every 310S strip in our own facility in Mumbai. The grade anchors the heat-resistant end of our stainless steel strips range. Buyers pick any width between 3 mm and 2000 mm, in annealed condition, with BA, 2B, Scotch-Brite, Matte, or Matte PVC surfaces. A documented quality trail follows each coil from source stock to the final certificate.
We provide ASTM A240 310S strip in annealed condition, cold rolled or hot rolled, slit to your drawing and supplied in coil.
| Parameter | Details |
|---|---|
| Standard | ASTM A240 / ASME SA-240, AMS 5521 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Annealed (Soft) |
| Surface Finish | BA (Bright Annealed), 2B, Scotch-Brite, Matte, Matte PVC |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
| Supply Form | Hot Rolled (HR), Cold Rolled (CR) |
Chromium drives the performance of this grade. At 24.0-26.0%, it forms the stable oxide scale that protects UNS S31008 strip through furnace cycling. Full ASME SA-240 limits appear below.
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulphur (S) | 0.030 max |
| Silicon (Si) | 1.50 max |
| Chromium (Cr) | 24.0 - 26.0 |
| Nickel (Ni) | 19.0 - 22.0 |
| Iron (Fe) | Balance |
Annealed Type 310S strip provides a minimum tensile strength of 515 MPa and remains workable for forming and punching. It is supplied only in an annealed condition, not as a temper-rolled grade.
| 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% |
|
Hardness, maximum
|
95 HRB |
International buyers can match Stainless Steel 310S winding strip from our stock against each regional designation in the table below. SUS 310S and AISI 310S enquiries draw from the same UNS S31008 material.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | S31008 |
| Europe (EN) | X8CrNi25-21 |
| Germany (W.Nr) | 1.4845 |
| Japan (JIS) | SUS 310S |
| South Korea (KS) | STS 310S |
| China (GB) | 06Cr25Ni20 |
| France (AFNOR) | Z12CN25-20 |
These 3 industries use most of the Stainless Steel 310S Slitting Coil. Buyers in each choose the grade for oxidation resistance and creep strength at service temperatures where 304 can't keep up.
Furnace builders form 310S stainless strip into muffle liners, radiant tube supports, baffles, and conveyor belt links. Continuous exposure at 1093 °C (2000 °F) in dry air leaves the protective scale intact. Kiln shrouds and burner surrounds take the same strip, though we advise derating where sharp thermal cycling between firings is routine.
Heat exchanger fabricators specify Alloy 310S strip for baffles, spacer bands, and sealing elements exposed to hot flue gas. Thermowells sheathed in the grade shield sensors inside boilers and process heaters. Creep strength matters here more than hardness. Thin slit strip, held to ±0.1 mm, wraps tube bundles without gaps.
Food processing plants fit SS 310S strip in baking bands, roaster linings, and fryer trim where product contact meets sustained heat. Nickel at 19.0-22.0% keeps the surface stable through hot alkaline cleaning cycles. Chemical equipment makers run the same strip around reformer internals and combustion air preheaters.
Dispatches move from our Mumbai and Taloja warehouses in wooden cases or on pallets, sea-worthy.
| 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 310S Strips price range in India is around ₹310-₹700 per kg. In the USA, it is generally $5-$9/kg. Nickel exchange rates move the figure week to week. Thickness, width, finish, and quantity set the final rate, so call or WhatsApp us for a firm quote.
Stainless Steel 310S strips are used in furnace components, kiln linings, heat exchanger baffles, thermowells, and food processing equipment. Any assembly needing oxidation resistance up to 1093 °C (2000 °F) suits the grade.
The main difference between 310 and 310S strips is carbon. Grade 310 permits 0.25% maximum while 310S caps it at 0.08%, which means welded joints don't sensitise during long spells at temperature.
We supply SS 310S strip from 0.03 mm to 5 mm thick and in any width from 3 mm to 2000 mm, slit to ±0.1 mm. Coil inner diameters run from 150 mm to 610 mm, with outer diameters up to 1800 mm.
Yes. 310S ultra-high-temperature strips weld cleanly with TIG, MIG, and resistance methods. The low carbon limit protects the heat-affected zone, so most fabricators skip post-weld heat treatment.
The difference between SS 304 and SS 310S strips comes down to alloy content. Grade 310S holds 24.0-26.0% chromium and 19.0-22.0% nickel against 18-20% and 8-10.5% in 304, so it serves continuously at 1093 °C (2000 °F) where 304 tops out near 870 °C.
You can source Stainless Steel 310S strips in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds 310S stainless strip and slit coil in ready stock, and as a supplier, exporter and stockist, we serve buyers across India plus 60+ export markets. Phone or WhatsApp us; we provide quotations within 24 hours.
