Amigo Impex is an Inconel 625 flanges manufacturer, supplier, stockist and exporter based in Mumbai, India. Established in 2013, our company produces this grade to ASTM B564 and the matching ASME SB-564 under UNS N06625. Cutting, machining, threading, fabrication, testing and packing run in-house, one quality system carrying each flange from forging blank to dispatch.
Inconel 625 gains its strength from molybdenum and niobium dissolved in a nickel-chromium matrix. Solid-solution hardening does the work: no ageing treatment is needed for a grade 1 annealed forging to certify at 827 MPa minimum tensile strength in sections up to 4 in. (102 mm). Nickel sits at a 58.0% minimum and chromium at 20.0- 23.0%, a chemistry that resists pitting, crevice attack and stress corrosion in seawater, brines and mixed acid streams from cryogenic temperatures upward. European drawings name the identical material W.Nr. 2.4856 or NiCr22Mo9Nb. Our production range covers standard flange sizes from NPS 1/2" to 24" in ASME B16.5 Classes 150 to 2500. High-pressure requirements (Class 1500 and 2500) above NPS 24 are fully non-standard and manufactured directly to custom customer design calculations.
Refinery revamps, offshore hook-ups and chemical plant shutdowns generate most repeat demand for the grade. Around 60-70 tonnes of nickel alloy stock in Mumbai keeps urgent flange requirements moving: ex-stock items are dispatched in 1 to 2 days, while made-to-order forgings follow in roughly 30 days. An EN 10204 3.1 or 3.2 material test certificate backs every consignment, and each flange traces to its mill heat number.
Amigo Impex manufactures Inconel 625 flanges inside the envelope tabled below: governing specification, supply condition, size band, class series, facings and certification. Every purchase order is checked against these parameters before forging begins.
Nominal size decides which dimensional code applies to Alloy 625 flanges, while a single material specification governs the forged stock itself. Orders against European or Japanese dimensional systems are equally supported.
| Category | Standard |
|---|---|
| Material Specification | ASTM B564 / ASME SB-564 |
| Dimensions, NPS 1/2" to 24" | ASME B16.5 |
| Orifice Flanges | ASME B16.36 (Class 300 and above; slip-on and threaded types in Class 300 only) |
| Line Blanks (Spades and Spacers) | ASME B16.48 |
| European and Japanese Dimensions | EN 1092-1:2018, DIN EN 1092-1, JIS B 2220:2012, BS EN 1759-1 (supersedes the withdrawn BS 1560-3.1) |
| Material Certification | EN 10204 3.1 / 3.2 |
Molybdenum and niobium separate UNS N06625 flanges from plainer nickel-chromium grades: molybdenum resists reducing acids and chloride pitting, while niobium stiffens the matrix and ties up carbon so the alloy resists sensitisation after welding. ASTM B564 fixes the limits below.
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 58.0 min |
| Chromium (Cr) | 20.0 - 23.0 |
| Molybdenum (Mo) | 8.0 - 10.0 |
| Niobium + Tantalum (Nb+Ta) | 3.15 - 4.15 |
| Iron (Fe) | 5.0 max |
| Cobalt (Co) | 1.0 max |
| Manganese (Mn) | 0.50 max |
| Silicon (Si) | 0.50 max |
| Aluminium (Al) | 0.40 max |
| Titanium (Ti) | 0.40 max |
| Carbon (C) | 0.10 max |
| Phosphorus (P) | 0.015 max |
| Sulphur (S) | 0.015 max |
Two supply conditions exist for ASTM B564 N06625 flanges, and the ordered condition sets the acceptance minima on the certificate. Grade 1 is annealed; Grade 2 is solution-annealed for hotter service.
| Grade / Condition | Section thickness | Tensile min | Yield min | Elongation min |
|---|---|---|---|---|
| Grade 1 (Annealed) | Up to 4 in. (102 mm) incl. | 827 MPa (120 ksi) | 414 MPa (60 ksi) | 30% |
| Grade 1 (Annealed) | Over 4 in. to 10 in. (102–254 mm) incl. | 758 MPa (110 ksi) | 345 MPa (50 ksi) | 25% |
| Grade 2 (Solution Annealed) | All sizes | 690 MPa (100 ksi) | 276 MPa (40 ksi) | 30% |
Regional standards register the equivalent grades of Inconel 625 flanges under their own numbering systems. A drawing marked 2.4856, NCF 625 or GH3625 calls for the same forged material we certify as UNS N06625.
| Country / Standard | Designation |
|---|---|
| USA (UNS) | UNS N06625 |
| Europe (EN / W.Nr.) | W.Nr. 2.4856 / NiCr22Mo9Nb |
| Japan (JIS) | NCF 625 |
| UK (BS) | NA 21 |
| France (AFNOR) | NC22DNb |
| China (GB) | NS3306 / GH3625 |
Eleven types of Inconel 625 flanges cover routine and special piping positions. Weld neck, slip-on, blind, socket weld, threaded, lap joint, long weld neck, reducing and orifice patterns are forged to ASTM B564. Plate flanges and spectacle blinds are machined from ASTM B443 plate.
Machined faces decide the packing method for Inconel 625 flanges: each sealing surface is wrapped individually before the flanges go into wooden cases or crates, and every piece carries heat number, size, class and specification marking. Domestic dispatches cover PAN India from Mumbai, while export consignments move by sea to the USA, the Gulf, Europe and Asia.
Certification for Inconel 625 flanges combines the original mill record with our own in-house test results on an EN 10204 3.1 certificate; 3.2 witness certification is arranged when the order names it. Third-party inspection is supported on request. Amigo Impex holds AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018 certifications.
Inconel 625 flange prices range from approximately ₹3,250–₹3,850 per kg in India and US$38–US$45 per kg internationally. Rates are quoted against confirmed specifications because nickel and molybdenum costs fluctuate. Flange type, size, pressure class, facing, supply condition, quantity, inspection scope, and quotation validity determine the final rate.
Contact Amigo Impex today for Inconel 625 flange pricing and stock availability.
Request a Quote60–70 tonnes held in Mumbai, with urgent requirements dispatched within one to two days.
AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018, with an MTC on every order.
Cutting, machining, threading, fabrication and testing all handled at our own Mumbai facility.
Original mill certificates plus our own test reports, so every batch can be traced back.
Non-standard sizes and specifications made to order.
Dispatched from Mumbai to every major Indian city, and exported to USA, Gulf, Europe, Asia
ASTM B564, the nickel alloy forgings specification, covers Inconel 625 flanges; ASME publishes the identical document as SB-564. Dimensions follow ASME B16.5 up to 24" and ASME B16.47 above.
Grade 1 Inconel 625 flanges are annealed. Up to 4 in. (102 mm) section they certify at 827 MPa tensile / 414 MPa yield / 30% elongation; over 4 in. to 10 in. the minima drop to 758 MPa / 345 MPa / 25%. Grade 2 is solution annealed for service above 593°C and certifies at 690 MPa / 276 MPa / 30% in all sizes.
Yes. It is the same material. W.Nr. 2.4856, NiCr22Mo9Nb, JIS NCF 625 and GB GH3625 all describe the alloy certified as UNS N06625.
We supply Inconel 625 flanges from NPS 1/2" to 24" in standard ASME B16.5 classes from 150# to 2500#. Any large-diameter flanges requiring higher pressure ratings are custom-machined to individual engineering project specifications.
Molybdenum at 8.0-10.0% and niobium plus tantalum at 3.15-4.15% give Inconel 625 flanges pitting and crevice-corrosion resistance that Inconel 600 flanges, which contain neither addition, don't offer.
ERNiCrMo-3 bare wire under AWS A5.14 matches the chemistry of Inconel 625 flanges for GTAW and GMAW; ENiCrMo-3 electrodes under AWS A5.11 cover manual welding.
Yes, Amigo Impex does provide a material test certificate with every Inconel 625 flange order, issued to EN 10204 3.1 or 3.2 as the purchase order specifies.
Piping in eight industries specifies nickel alloy 625 flanges for hot, chloride-laden or acidic service.
