We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Inconel 625 Coils, founded in 2002. We stock nickel-chromium-molybdenum-niobium alloy coils to ASTM B443, from 0.03 mm to 5 mm thick, custom-slit to width at ±0.1 mm. Our ISO 9001, 14001, and 45001-certified company holds ready stock and ships with EN 10204 Type 3.1 / 3.2 certificates available on request.
Inconel 625 coils are flat-rolled strips of a nickel-chromium-molybdenum-niobium alloy (UNS N06625) wound into a continuous coil. The grade holds a minimum 58% nickel, which gives it high-temperature strength and resistance to pitting, crevice corrosion, and chloride stress-corrosion cracking. Niobium stiffens the matrix, so the alloy performs up to about 980 °C with good weldability. It is found in marine and offshore applications and nuclear plants.
Our inventory can hold up to 1000 tonnes annually with a monthly supply capacity of 400-500 tonnes. Every Alloy 625 coil is supplied from ready stock, sourced from reputed primary mills and slit in-house to the buyer's width. Material ships in annealed condition to ASTM B443, with coil inner diameters from 150 mm to 610 mm and outer diameters up to 1800 mm.
We provide ASTM B443 Inconel 625 coil stock in annealed condition, in a range of thicknesses and widths, with several finishes and edge options.
| Parameter | Details |
|---|---|
| Standard | ASTM B443 / ASME SB-443 |
| Thickness | 0.03 mm to 5 mm |
| Width | 3 mm to 2000 mm |
| Width Tolerance | ±0.1 mm |
| Coil ID | 150 mm to 610 mm |
| Coil OD | Up to 1800 mm |
| Condition | Annealed (standard mill condition) |
| Surface Finish | BA (Bright Annealed), 2B |
| Edge | Slit edge, Mill edge, Deburred edge, Round edge |
| Supply Form | Hot Rolled (HR), Cold Rolled (CR) |
Molybdenum drives the corrosion performance of this grade. UNS N06625 coils carry 8.0 to 10.0% molybdenum, which resists pitting in reducing acids and chlorides. The full composition per ASTM B443 appears below.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 58.0 min (balance) |
| Chromium (Cr) | 20.0 to 23.0 |
| Molybdenum (Mo) | 8.0 to 10.0 |
| Niobium (Nb) + Tantalum (Ta) | 3.15 to 4.15 |
| Iron (Fe) | 5.0 max |
| Carbon (C) | 0.10 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Phosphorus (P) | 0.015 max |
| Sulphur (S) | 0.015 max |
| Aluminium (Al) | 0.40 max |
| Titanium (Ti) | 0.40 max |
| Cobalt (Co) | 1.0 max |
Annealed Alloy 625 coils combine an 827 MPa minimum tensile strength with 30% elongation, so the strip forms and welds without cracking. The values below apply per ASTM B443.
| Property | Value (Metric) | Value (Imperial) |
|---|---|---|
|
Tensile Strength, minimum
|
827 MPa | 120 ksi |
|
Yield Strength (0.2% offset), minimum
|
414 MPa | 60 ksi |
|
Elongation in 50 mm, minimum
|
30% | 30% |
|
Hardness (typical, annealed)
|
95 HRB | 95 HRB |
International buyers can cross-reference UNS N06625 coils against their regional standard below.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | N06625 |
| Europe (EN) | NiCr22Mo9Nb |
| Germany (W.Nr) | 2.4856 |
| Japan (JIS) | NCF 625 |
| China (GB) | NS336 |
| UK (BS) | NA 21 |
| Russia (GOST) | ХН75МБТЮ |
These 4 industries commonly utilise most of the Inconel 625 coils we stock and slit. Buyers select the grade for high-temperature strength and corrosion resistance.
Aerospace fabricators form Alloy 625 coil into exhaust ducting, bellows, and thrust-reverser parts. The grade holds its strength through repeated thermal cycling, and its fatigue resistance suits parts that vibrate under load. Thin-gauge Inconel coil slit to width feeds press lines directly.
Chemical plants use Inconel 625 coils for heat exchangers, reactor liners, and scrubber internals. The high molybdenum content resists sulphuric and hydrochloric acid, while chromium guards against oxidising media. One material can therefore serve streams that otherwise need two.
Marine and offshore builders specify Alloy 625 coils where seawater and chlorides attack lesser alloys. The grade resists chloride stress-corrosion cracking and crevice corrosion, so it lasts in splash-zone hardware, propeller sleeves, and subsea cabling. Its strength also allows for thinner sections.
Power and nuclear plants use Inconel 625 coils in bellows, seals, and reactor-core parts exposed to high heat and radiation. The alloy keeps its tensile strength at temperature and resists creep. The grade is widely used in sour-service applications.
Export orders leave Mumbai and Taloja, secured in wooden cases or on pallets for sea.
| 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 |
Inconel 625 coils price in India is around ₹2,500 to ₹3,900 per kg. In the USA, it is generally $26 to $41 per kg. The rate tracks the global nickel market, and thickness, width, finish, and quantity move the figure. Volume discounts apply, so call or WhatsApp us for today's price on Alloy 625 coils.
Inconel 625 coils are used in aerospace exhaust systems, chemical heat exchangers, marine hardware, and nuclear components, wherever high-temperature strength and corrosion resistance matter.
There isn't a metallurgical difference between Inconel 625 and Alloy 625 coils. Inconel 625 is a registered trade name, while Alloy 625 is the generic term for the same UNS N06625 material with identical properties.
The thickness available in Inconel 625 coils runs from 0.03 mm to 5 mm, and the width from 3 mm to 2000 mm. We slit to your width at ±0.1 mm.
Inconel 625 coil is more expensive than stainless steel coil because it holds a minimum 58% nickel plus molybdenum and niobium, and that chemistry buys far greater corrosion resistance.
The finishes available for Inconel 625 coils are BA (Bright Annealed) and 2B.
The lead time for Inconel 625 coils is 4 to 5 days from our ready stock, whether full-width or custom-slit. Urgent dispatch runs within 2 to 3 days.
You can source Inconel 625 coils in India from us at Riddhi Siddhi Impex. Our Mumbai and Taloja warehouses hold Alloy 625 coil inventory on the shelf. As a supplier, stockist, and exporter, we serve buyers across India and overseas and can provide a quotation within 24 hours.
