We are Riddhi Siddhi Impex, a Mumbai-based supplier and stockist of Inconel 625 Sheets & Plates, established in 2002. We hold a ready stock of this nickel-chromium-molybdenum-niobium alloy to ASTM B443 / ASME SB-443, in sheets from 0.8 mm and above and plates in heavier gauges, sourced from reputed primary mills. Our ISO 9001, 14001, and 45001-certified company ships worldwide with EN 10204 Type 3.1 / 3.2 certificates.
Inconel 625 sheets and plates are nickel-chromium-molybdenum-niobium alloy (UNS N06625) flat products holding a minimum of 58% nickel. Molybdenum and niobium harden the matrix in solution, so the alloy resists pitting, crevice corrosion, and chloride stress-corrosion cracking without heat treatment. Flat products hold their strength up to about 980 °C, which suits acid and seawater service.
We stock the grade in cold-rolled sheets from 0.8 mm and hot-rolled plates in heavier gauges. Every Alloy 625 sheet and plate ships annealed to ASTM B443, in HR pickled, 2B, BA, or No.4 finishes. We have a monthly supply capacity of 400-500 tonnes.
We provide ASTM B443 Inconel 625 plate and UNS N06625 sheet in annealed condition, in several finishes and two edge options.
| Parameter | Details |
|---|---|
| Standard | ASTM B443 / ASME SB-443 |
| Aerospace Specification | AMS 5599 |
| Thickness (Sheets, CR) | 0.8 mm to 6 mm |
| Thickness (Plates, HR) | 3 mm and above |
| Condition | Annealed (solution annealed) |
| Surface Finish | HR Pickled, 2B, BA (Bright Annealed), No.4 |
| Edge | Mill edge, Slit edge |
| Form | Hot Rolled Plate, Cold Rolled Sheet |
Molybdenum sets this grade apart. UNS N06625 carries 8.0 to 10.0% molybdenum, working with niobium to resist pitting in reducing acids and chlorides. The full ASTM B443 composition follows.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 58.0 min |
| 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 |
Tensile strength anchors the data. Annealed Alloy 625 plate meets an 827 MPa minimum, and the high elongation lets it form and weld without cracking. We primarily supply Grade 1 annealed flat products. The values below apply to the annealed condition per ASTM B443 Grade 1.
| Property | Value (Minimum) |
|---|---|
|
Tensile Strength
|
827 MPa (120 ksi) |
|
Yield Strength (0.2% offset)
|
414 MPa (60 ksi) |
|
Elongation in 50 mm
|
30% |
International buyers can cross-reference the UNS N06625 sheet and plate 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 |
| France (AFNOR) | NC22DNb |
| UK (BS) | NA 21 |
| GOST | ХН75МБТЮ |
These 5 industries use Inconel 625 sheets and plates we supply, chosen for corrosion resistance and high-temperature strength.
Chemical plants fabricate reactor liners, heat exchangers, and scrubber internals from Nickel Alloy 625 plate. The high molybdenum content withstands sulphuric and hydrochloric acid, while chromium guards against oxidising media.
Aerospace fabricators specify Inconel 625 sheet to AMS 5599 for exhaust systems, ducting, and thrust-reverser parts. The grade holds its tensile strength through repeated thermal cycling, and it resists fatigue in vibrating components.
Marine and offshore builders use Alloy 625 plate where seawater and chlorides attack lesser metals. The molybdenum and niobium resist pitting and crevice corrosion, so it lasts in splash-zone and subsea hardware.
Power stations use Inconel 625 plate in gas-turbine sections, bellows, and expansion joints exposed to high heat. The alloy resists creep and oxidation, holding strength where carbon and stainless steels soften.
Flue-gas desulphurisation systems use Inconel 625 sheets and plates for scrubber vessels, ducts, and stack liners. Wet FGD service combines acids, chlorides, and heat, which this grade resists to extend component life.
Export orders leave our Mumbai and Taloja warehouses in wooden cases or on pallets, ready 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 Sheets & Plates price in India is around ₹1,050 to ₹3,200 per kg. For international buyers, it is generally $27 to $45 per kg. The figure tracks the global nickel market, and the thickness, width, finish, and quantity. Call or WhatsApp us for today's rate and volume discounts.
Inconel 625 sheets and plates are covered by ASTM B443 and its ASME equivalent SB-443, with AMS 5599 for aerospace forms. These standards set the chemistry, mechanical minimums, and tolerances for UNS N06625.
The main difference between Inconel 625 sheet and plate is thickness and rolling way. The sheet is 2B or BA finish cold rolled to a thickness of about 6 mm. The plate is hot rolled in gauges of 3 mm and over with a pickled finish. Both are ASTM B443 compliant.
Inconel 625 plate holds more molybdenum and niobium than Incoloy 825, so it offers higher strength and better resistance to pitting and chloride cracking. Incoloy 825 suits sulphuric and phosphoric acid service at a lower cost, where that extra performance is not required.
Yes, we provide EN 10204 Type 3.1 and 3.2 mill test certificates with every shipment of Inconel 625 sheets and plates. Each certificate confirms chemistry and mechanical properties with full traceability, and TDS is available on request.
Riddhi Siddhi Impex is one of the most reliable Inconel 625 plate suppliers in India. We are a supplier, stockist & exporter with ready stock at our Mumbai warehouse and dispatch within 4 to 5 days with quotes within 24 hours.
