We are Riddhi Siddhi Impex, a Mumbai-based Monel 400 strips manufacturer and supplier, established in 2002. We slit nickel-copper Alloy 400 strip to ASTM B127/ASME SB-127 in thicknesses from 0.03 mm to 5 mm. Our ISO 9001, 14001, and 45001-certified company carries ready stock and a monthly supply capacity of 400 to 500 tonnes, with EN 10204 Type 3.1 / 3.2 certificates available on request.
Monel 400 strips are thin, cold-rolled sections of a nickel-copper alloy holding 63.0% minimum nickel and 28.0 to 34.0% copper. This solid-solution grade is not hardenable by heat treatment, so it gains strength through cold work. The high nickel and copper content resists hydrofluoric acid, seawater, and reducing conditions that attack stainless steel. UNS N04400 also keeps its ductility to subzero temperatures, which suits springs and formed parts.
We process every Nickel-Copper Alloy 400 strip in-house on our own slitting lines. Material leaves in soft annealed condition to ASTM B127, slit to any width between 3 mm and 2000 mm. You can specify BA, 2B, or Matte surfaces with slit, deburred, or round edges. A mill test certificate ships with every order.
We provide ASTM B127 Monel 400 strips in soft annealed condition, in thicknesses from 0.03 mm to 5 mm and precision-slit widths from 3 mm to 2000 mm, with a choice of finishes and edges.
| Parameter | Details |
|---|---|
| Standard | ASTM B127 / ASME SB-127, AMS 4544 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Condition | Soft / Annealed |
| Surface Finish | BA (Bright Annealed), 2B, Matte, Matte PVC |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
Nickel and copper define this grade. Monel 400 slitting coil carries at least 63.0% nickel with 28.0 to 34.0% copper, and this pairing gives the alloy its resistance to reducing acids and seawater. The full composition to ASTM B127 appears below.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 28.0 to 34.0 |
| Iron (Fe) | 2.50 max |
| Manganese (Mn) | 2.00 max |
| Carbon (C) | 0.30 max |
| Silicon (Si) | 0.50 max |
| Sulphur (S) | 0.024 max |
Soft annealed Alloy 400 strip pairs a 480 MPa minimum tensile strength with 35% elongation, so it forms, bends, and draws without cracking. The yield minimum applies to the qualifying gauge, so figures for strips below 0.51 mm are indicative.
| Property | Value |
|---|---|
|
Tensile Strength, minimum
|
480 MPa (70 ksi) |
|
Yield Strength (0.2% offset), minimum
|
193 MPa (28 ksi) |
|
Elongation in 50 mm, minimum
|
35% |
|
Density
|
8.8 g/cm³ |
International buyers can cross-reference the UNS N04400 strip against their regional standard below. The 2.4360 strips we slit match every designation listed, since all name the same nickel-copper alloy.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | N04400 |
| USA (AMS) | AMS 4544 |
| Europe (EN Name) | NiCu30Fe |
| Germany (W.Nr) | 2.4360 |
| Japan (JIS) | NW4400 |
| United Kingdom (BS) | NA 13 |
These 4 industries take most of the Alloy 400 strips we slit. Buyers select the grade for its resistance to hydrofluoric acid, seawater, and reducing environments, with strength from cryogenic to moderate temperatures.
Chemical plants use Monel 400 strip for valve and pump components, seals, gaskets, and heat exchanger parts exposed to hydrofluoric and sulphuric acid. The nickel-copper matrix resists reducing acids that corrode stainless steel, extending equipment life.
Marine fabricators specify Alloy 400 strips for hardware in seawater service, sealing parts and pump shaft components. UNS N04400 is a proven material for flowing seawater service, with strong resistance to chloride stress corrosion cracking.
Oil and gas operators fit Monel 400 strips into wellhead components, valve trim, and instrument parts in reducing chloride-bearing environments. These Monel strips hold up against sour conditions and brine, and slit strip suits sealing rings and downhole parts.
Spring makers choose Monel 400 strips for springs, bellows, and flexible connectors that resist corrosion under repeated flexing. The alloy keeps its ductility at subzero temperatures, so parts stay reliable in cryogenic service. Precision-slit widths feed forming lines cleanly.
Export orders leave 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 |
Monel 400 Strips price range in India is around ₹1,000 to ₹3,000 per kg. In the USA, it is generally $27 to $48 per kg. The figure tracks global nickel and copper rates, and thickness, width, and finish all move it. Call or WhatsApp for today's rate.
Monel 400 strips are covered by ASTM B127 / ASME SB-127 for nickel-copper alloy (UNS N04400) plate, sheet, and strip. For aerospace use, AMS 4544 also applies.
We slit Monel 400 strips from 0.03 mm to 5 mm thick and to any width between 3 mm and 2000 mm, held to ±0.1 mm on width. Finish follows your order.
Yes, we precision-slit Monel 400 strips to any width from 3 mm to 2000 mm on our own lines, holding ±0.1 mm. Custom slitting is our core service.
We supply Monel 400 strips in BA, 2B, Matte, and Matte PVC finishes. Edges can be slit, mill, deburred, or round, specified with your order.
Monel 400 strips are used in chemical and petrochemical processing, marine engineering, oil and gas, and spring and bellows manufacturing, wherever corrosion resistance in reducing and seawater conditions is needed.
Standard dispatch runs 4 to 5 days from ready stock, and urgent orders can leave in 2 to 3 days. We hold Alloy 400 strip inventory to speed delivery.
You can source Monel 400 strips in India from us at Riddhi Siddhi Impex. Our Mumbai warehouse holds N04400 strips on the shelf for immediate dispatch. As a manufacturer, stockist, and exporter, we serve buyers across India and overseas, with a quote within 24 hours.
