We are Riddhi Siddhi Impex, a Mumbai-based Incoloy 825 Foils manufacturer and supplier, established in 2002. We roll and slit nickel-iron-chromium Alloy 825 foil to ASTM B424 / ASME SB-424 in thicknesses from 0.03 mm to 0.08 mm. Our ISO 9001, 14001, and 45001-certified firm carries ready stock, a monthly supply capacity of 400-500 tonnes, and EN 10204 Type 3.1 / 3.2 certificates available on request.
Incoloy 825 foils are thin, precision-rolled sections of a nickel-iron-chromium alloy carrying 38.0 to 46.0% nickel along with molybdenum, copper, and titanium. Copper and molybdenum resist reducing acids such as sulphuric and phosphoric, chromium covers oxidising media, and titanium guards welded joints against sensitisation. UNS N08825 foil also resists chloride pitting and stress corrosion cracking, so fabricators pick it for shim and gasket stock in acid service. These Inconel Foils are mostly used in marine engineering and the oil and gas industries.
As a reputed Incoloy 825 foil supplier and manufacturer, we process every Alloy 825 foil in-house on our own slitting lines. Material leaves in annealed soft condition to ASTM B424, slit to any width between 3 mm and 2000 mm. Buyers can specify BA, 2B, Matte PVC, or Matte finishes, and slit, deburred, or round edges.
We provide ASTM B424 Incoloy 825 foils in annealed condition, cold rolled, precision slit from 0.03 mm gauge across several finishes and edge options.
| Parameter | Details |
|---|---|
| Standard | ASTM B424 / ASME SB-424 |
| Thickness | 0.03 mm to 0.08 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Annealed (Soft) |
| Surface Finish | BA (Bright Annealed), 2B, Matte, Matte PVC |
| Supply Form | Coll Rolled |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
Nickel at 38.0 to 46.0% blocks chloride stress corrosion cracking, copper and molybdenum carry the reducing-acid duty, and titanium at 0.6 to 1.2% stabilises welds. The ASTM B424 limits appear below.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 38.0 to 46.0 |
| Chromium (Cr) | 19.5 to 23.5 |
| Iron (Fe) | 22.0 min |
| Molybdenum (Mo) | 2.5 to 3.5 |
| Copper (Cu) | 1.5 to 3.0 |
| Titanium (Ti) | 0.6 to 1.2 |
| Carbon (C) | 0.05 max |
| Manganese (Mn) | 1.0 max |
| Silicon (Si) | 0.5 max |
| Sulphur (S) | 0.03 max |
| Aluminium (Al) | 0.2 max |
Annealed Incoloy 825 alloy foil delivers a 586 MPa minimum tensile strength with 30% elongation, so it forms, folds, and draws without cracking. Per ASTM B424, yield requirements do not apply below 0.51 mm, and figures for the thinnest foil gauges are indicative.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
586 MPa (85 ksi) |
|
Yield Strength (0.2% offset), minimum
|
241 MPa (35 ksi) |
|
Elongation in 50 mm, minimum
|
30% |
International buyers can cross-reference UNS N08825 foil against their regional standard in the table below. The 2.4858 foil we slit matches every designation listed.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | N08825 |
| Europe (EN) | NiCr21Mo |
| Germany (W.Nr) | 2.4858 |
| Japan (JIS) | NCF 825 |
| United Kingdom (BS) | NA 16 |
| Russia (GOST) | ЭП703 |
These 4 industries commonly specify the Nickel Alloy 825 foils we slit: chemical processing, oil and gas, marine engineering, and pollution control with power generation.
Chemical plants use Alloy 825 foil in gaskets, shims, and lining strips exposed to sulphuric and phosphoric acid. The copper and molybdenum content stays stable in reducing acid streams that pit plain stainless grades, so thin sealing parts last between shutdowns.
Sour-service fabricators specify Incoloy 825 foil for sealing rings, spacers, and instrument diaphragms that contact hydrogen sulphide and chloride brines. The high nickel base blocks stress corrosion cracking in hot, saline wells.
Marine builders use 825 foils in seawater sensor housings, gasket stock, and heat exchanger sealing strips. The grade resists chloride pitting and crevice attack, keeping thin sections intact in salt spray and immersion.
Flue gas desulphurisation units take Alloy 825 foil for scrubber seals and expansion joint membranes handling acidic condensate. The chromium and molybdenum matrix withstands chloride-laden gas, and custom-slit widths fit each duct and joint.
Export orders leave from Mumbai and Taloja, packed 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 |
Incoloy 825 Foil price in India is around ₹1,800 to ₹2,554 per kg. For international buyers, it works out to roughly $22 to $32 per kg. The figure tracks nickel and molybdenum benchmarks, and foil gauge, width, finish, and quantity all move it. This range is indicative, so call or WhatsApp us for today's rate.
We slit Incoloy 825 foils from 0.03 mm to 0.08 mm thick and to any width between 3 mm and 2000 mm, held to ±0.1 mm on width, from ready stock.
Incoloy 825 foils are produced from ASTM B424 / ASME SB-424 material, which specifies Ni-Fe-Cr-Mo-Cu alloy (UNS N08825) plate, sheet, and strip. EN 10204 Type 3.1 / 3.2 certificates ship on request.
The difference between Incoloy 825 and Incoloy 800 foils lies in the chemistry. Incoloy 825 (UNS N08825) carries higher nickel at 38.0 to 46.0% plus molybdenum and copper, so it resists reducing acids and chloride stress corrosion cracking far better. Incoloy 800 (UNS N08800) suits high-temperature duty instead.
Yes, we custom-slit Incoloy 825 foils to any width from 3 mm to 2000 mm on our own lines, holding ±0.1 mm. Send us your exact width for a quotation.
You can source Incoloy 825 foils in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds Alloy 825 foil on the shelf for immediate dispatch. As a manufacturer, stockist, and exporter, we serve buyers across India and overseas. Phone or WhatsApp us for a quote within 24 hours.
