We are Riddhi Siddhi Impex, a Mumbai-based Incoloy 825 shims manufacturer and supplier, established in 2002. We slit shims from this nickel-iron-chromium-molybdenum-copper alloy to ASTM B424 / ASME SB-424 in thicknesses of 0.03 mm to 5 mm. Our ISO 9001, 14001, and 45001-certified firm holds ready stock, a monthly supply capacity of 400-500 tonnes, and issues EN 10204 Type 3.1 / 3.2 mill test certificates on request.
Incoloy 825 shims are thin, flat spacers slit from a nickel-iron-chromium alloy carrying 38.0 to 46.0% nickel and 19.5 to 23.5% chromium, plus molybdenum, copper, and titanium. Copper and molybdenum handle reducing acids such as sulphuric and phosphoric, while the high nickel base resists chloride stress corrosion cracking. Titanium guards welded assemblies against sensitisation. Buyers sometimes type Inconel 825 shims; the correct name for UNS N08825 is Incoloy 825. These Inconel Shims are used in marine applications, pharmaceutical industries, and more.
As a reliable Incoloy 825 shim supplier and manufacturer, we slit every Alloy 825 shim in-house. Material leaves annealed soft to ASTM B424, cut to any width between 3 mm and 2000 mm. Buyers choose BA, 2B, Matte PVC, and Matte surfaces with slit, deburred, or round edges, and a mill test certificate accompanies each order when requested.
We provide ASTM B424 shims in annealed condition, 0.03 mm to 5 mm thick, precision-slit from 3 mm to 2000 mm wide with a choice of finishes and edges.
| Parameter | Details |
|---|---|
| Standard | ASTM B424 / ASME SB-424 |
| 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, Matte, Matte PVC |
| Supply Form | Cold Rolled |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
UNS N08825 shims pair 1.5 to 3.0% copper with 2.5 to 3.5% molybdenum against reducing acids, while chromium covers oxidising media. The ASTM B424 composition appears 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 N08825 shims meet a 586 MPa minimum tensile strength with 30% elongation, so they punch and form cleanly at shim gauges. We supply soft annealed material only, with no temper ladder. Under ASTM B424, minimums apply at the qualifying gauge; figures for the thinnest shims 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 the W.Nr 2.4858 shim stock we slit against their regional standard below. Every designation listed names the same alloy.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | N08825 |
| Europe (EN) | NiCr21Mo |
| Germany (W.Nr) | 2.4858 |
| Japan (JIS) | NCF 825 |
| United Kingdom (BS) | NA16 |
| China (GB) | NS142 |
These 4 industries use most of the Nickel Alloy 825 shims we produce. Buyers pick the grade where a spacer must hold its gauge in acid and chloride service.
Chemical plants set pump bases, agitator mounts, and flange faces with Alloy 825 shims in sulphuric and phosphoric acid areas. The copper and molybdenum content keeps the packed shim from pitting, so alignment settings survive acid splash that thins out ordinary spacers.
Sour-service fabricators use Incoloy 825 shims behind wellhead hardware, valve seats, and separator internals exposed to hydrogen sulphide and hot brines. The nickel base resists the stress corrosion cracking that splits stainless shims.
Offshore crews level seawater pump skids and pack expansion gaps with 825 shims. Chloride pitting and crevice attack stay off the shim faces under salt spray, and a spacer slit to ±0.1 mm drops into place without site trimming.
Equipment builders space vessel jackets, dosing skids, and clean-in-place piping supports with Alloy 825 shims. The titanium-stabilised chemistry holds its corrosion resistance through repeated cleaning cycles, and the shim sheds no corrosion product into hygiene-critical lines.
Export orders leave from Mumbai and Taloja in wooden cases or on pallets, sea-ready.
| 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 Shims price in India is around ₹1,400-₹1,800 per kg. For international buyers, it works out to roughly $15-$19 per kg. Precision slitting puts shims above plain coil rates. Thickness, width, finish, quantity, and nickel benchmarks all move the figure. Call or WhatsApp us for today's rate and volume discounts.
We slit Incoloy 825 shims from 0.03 mm to 5 mm thick and to any width between 3 mm and 2000 mm. Material below 0.03 mm falls under our Incoloy 825 foil range.
Yes, we custom-slit Incoloy 825 shims to any width from 3 mm to 2000 mm on our own lines, holding ±0.1 mm. It's our core service.
Incoloy 825 shims are covered by ASTM B424 / ASME SB-424, which specifies Ni-Fe-Cr-Mo-Cu alloy (UNS N08825) plate, sheet, and strip. Shims ship as a precision-slit strip under this specification.
The price of Incoloy 825 shims is around ₹1,400-₹1,800 per kg, roughly $15-$19 per kg for export buyers. Gauge, width, finish, quantity, and prevailing nickel rates all shift the figure, so contact us for a firm quote.
Incoloy 825 shims are used in chemical processing, oil and gas, marine and offshore, and pharmaceutical and food processing plants, wherever spacers face acid, hydrogen sulphide, or chloride attack.
You can source Incoloy 825 shims in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds Alloy 825 shim stock ready for dispatch. As a manufacturer, supplier, and exporter since 2002, we serve buyers across India and overseas. Call or WhatsApp us, and we will provide a quote within 24 hours.
