Inconel 625 Flanges Supplier and Exporter
Amardeep Steel Centre is a globally recognized supplier and exporter of Inconel 625 Flanges in accordance to ASTM B564/ASME SB564. Our UNS N06625 flanges are offered in all the major flanges type such as Weld neck flanges, Blind flanges, Slip-on flanges, Socket weld flanges, Threaded flanges, Lap joint flanges, Ring type joint flanges. These flanges are part of our wide selection of Inconel products and are used in a wide variety of applications within oil and gas, chemical processing, aerospace and marine engineering. The various sizes and pressure classes of alloy 625 flanges are available in stock.Alloy 625 flanges are available in various sizes and pressure classes and are in stock. Each piece is forged, heat treated and machine to guarantee exact dimensional and meet all international standards. We have an export capability of more than 80 countries, fully supported by complete mill test report, third party inspection and NACE MR0175 compliance. Explore our full range ofInconel 625 pipes and tubes andInconel forged fittings as part of your complete piping solution.
Table of Contents
- Inconel 625 Flanges Supplier and Exporter Overview
- Types of Inconel 625 Flanges
- Inconel 625 Flanges Specifications
- Chemical Composition of Inconel 625 Flanges
- Mechanical Properties of Inconel 625 Flanges
- Physical Properties of Inconel 625 Flanges
- Inconel 625 Flange Pressure Rating
- 625 Inconel Pipe Flange Dimensions
- Corrosion Resistance and Strength of Alloy 625 Flanges
- Applications of Inconel 625 Flanges
- Inconel 625 Flanges Equivalent Grades
- Inconel 625 Flange Testing Method
- Frequently Asked Questions
- Related Products
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Types of Inconel 625 Flanges
We supply a complete range of ASTM B564 UNS N06625 flanges in standard and project-specific configurations:
Inconel 625 Flanges Specifications
| Parameter | Details |
|---|---|
| Material Standard | ASTM B564 / ASME SB564 |
| UNS Number | UNS N06625 |
| Werkstoff Number | 2.4856 |
| Dimensional Standards | ASME B16.5, ASME B16.47 (Series A and B), ASME B16.36, ASME B16.48 |
| Size Range | 1/2" to 48" (NPS) / 15NB to 1200NB / DN15 to DN1200 |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# / PN6 to PN100 |
| Facing Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ), Male and Female (M&F), Tongue and Groove (T&G) |
| Schedule | SCH 5S, SCH 10, SCH 40, SCH 80, SCH 160, XXS and STD |
| Finish | Stock Finish (125-250 uIn), Smooth Finish, Serrated Finish, Mirror Finish, Spiral Serrated, Concentric Serrated |
| Heat Treatment | Grade 1: Annealed at 871 deg C minimum. Grade 2: Solution Annealed at 1093 deg C minimum. |
| Compliance | NACE MR0175 / ISO 15156, NACE TM-0284, NACE MR0103 |
| Welding Consumables | Electrodes: Inconel 112. Fillers: Incoloy 82, Inconel Filler Metal 625 |
Chemical Composition of Inconel 625 Flanges (UNS N06625)
| Element | Ni | Cr | Mo | Nb + Ta | Fe |
|---|---|---|---|---|---|
| Content | 58.0% min | 20.0 - 23.0% | 8.0 - 10.0% | 3.15 - 4.15% | 5.0% max |
| Element | C | Si | Mn | Al | Ti |
| Content | 0.10% max | 0.50% max | 0.50% max | 0.40% max | 0.40% max |
| Element | Co | P | S | Cu | - |
| Content | 1.0% max | 0.015% max | 0.015% max | 0.05% max | - |
Mechanical Properties of Inconel 625 Flanges
| Property | Grade 1 (Annealed) | Grade 2 (Solution Annealed) |
|---|---|---|
| Tensile Strength (MPa) | 827 min | 1034 min |
| Yield Strength (MPa) | 414 min | 655 min |
| Elongation (%) | 30% min | 30% min |
| Hardness (Brinell) | 145 - 220 HB | 145 - 220 HB |
| Reduction of Area | 35% min | 35% min |
Physical Properties of Inconel 625 Flanges
| Property | Value | Unit |
|---|---|---|
| Density | 8.44 | g/cm3 |
| Melting Range | 1290 - 1350 | Degree C |
| Thermal Conductivity | 9.9 | W/m.K |
| Specific Heat | 0.42 | J/g.C |
| Electrical Resistivity | 1.29 x 10-6 | Ohm.m |
| Young's Modulus | 207.5 | GPa |
| Max Service Temperature | 982 (1800 deg F) | Degree C |
Inconel 625 Flange Pressure Rating
| Temp., °C | Working Pressures by Classes, bar | ||||||
|---|---|---|---|---|---|---|---|
| - | 150 | 300 | 400 | 600 | 900 | 1500 | 2500 |
| -29 ~ 38 | 20.0 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 50 | 19.5 | 51.7 | 68.9 | 103.4 | 155.1 | 258.6 | 430.9 |
| 100 | 17.7 | 51.5 | 68.7 | 103.0 | 154.6 | 257.6 | 429.4 |
| 150 | 15.8 | 50.3 | 66.8 | 100.3 | 150.6 | 250.8 | 418.2 |
| 200 | 13.8 | 48.6 | 64.8 | 97.2 | 145.8 | 243.4 | 405.4 |
| 250 | 12.1 | 46.30 | 61.7 | 92.7 | 139.0 | 231.8 | 386.2 |
| 300 | 10.2 | 42.9 | 57.0 | 85.7 | 128.6 | 214.4 | 357.1 |
| 325 | 9.3 | 41.4 | 55.0 | 82.6 | 124.0 | 206.6 | 344.3 |
| 350 | 8.4 | 40.3 | 53.6 | 80.4 | 120.7 | 201.1 | 335.3 |
| 475 | 3.7 | 31.7 | 42.3 | 63.4 | 95.1 | 158.2 | 263.9 |
| 500 | 2.8 | 28.2 | 37.6 | 56.5 | 84.7 | 140.9 | 235.0 |
| 538 | 1.4 | 16.5 | 22.1 | 33.1 | 49.6 | 82.7 | 137.9 |
| 550 | - | 13.9 | 18.6 | 27.9 | 41.8 | 69.7 | 116.2 |
| 375 | 7.4 | 38.9 | 51.6 | 77.6 | 116.5 | 194.1 | 323.2 |
| 600 | - | 6.6 | 8.9 | 13.3 | 19.9 | 33.2 | 55.3 |
| 625 | - | 5.1 | 6.8 | 10.3 | 15.4 | 25.7 | 42.8 |
| 650 | - | 4.7 | 6.3 | 9.5 | 14.2 | 23.6 | 39.4 |
| 400 | 6.5 | 36.5 | 48.9 | 73.3 | 109.8 | 183.1 | 304.9 |
| 425 | 5.5 | 35.2 | 46.5 | 70.0 | 105.1 | 175.1 | 291.6 |
| 450 | 4.6 | 33.7 | 45.1 | 67.7 | 101.4 | 169.0 | 281.8 |
| 575 | - | 9.4 | 12.6 | 18.9 | 28.3 | 47.2 | 78.6 |
625 Inconel Pipe Flange Dimensions
| Standard | AS4087 | AS 2129 Flange | AS 2129 Flange | AS 2129 Flange | AS 2129 Flange | AS 2129 Flange | AS 2129 Flange | ISO 7005 (DIN) Flange | ISO 7005 (DIN) Flange | ISO 7005 (DIN) Flange | ISO 7005 (DIN) Flange | ISO 7005 (DIN) Flange | ISO 7005 (DIN) Flange | ANSI B16.5 | ANSI B16.5 | ANSI B16.5 | ANSI B16.5 | ANSI B16.5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Class | PN14 | Table C | Table D | Table E | Table F | Table H | Table J | PN6 | PN10 | PN16 | PN20 | PN25 | PN40 | ANSI 150 | ANSI 300 | ANSI 600 | ANSI 900 | ANSI 1500 |
| Diameter | 95 | 95 | 95 | 95 | 95 | 114 | 114 | 80 | 95 | 95 | 90 | 95 | 95 | 89 | 95 | 95 | 121 | 121 |
| Bolt Circle Diameter | 67 | 67 | 67 | 67 | 67 | 83 | 83 | 55 | 65 | 65 | 60.5 | 65 | 65 | 60 | 67 | 67 | 83 | 83 |
| Number of Bolts | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 |
| Bolt Size | M12 | 13 | 13 | 13 | 13 | 16 | 16 | M10 | M12 | M12 | M14 | M12 | M12 | 13 | 13 | 13 | 19 | 19 |
| Diameter of Bolt Hole | 14 | 14 | 14 | 14 | 14 | 17 | 17 | 11 | 14 | 14 | 16 | 14 | - | - | - | - | - | - |
Corrosion Resistance and Strength of Alloy 625 Flanges
Inconel 625 flanges deliver exceptional performance in corrosive and high-temperature environments. The combination of nickel, chromium, molybdenum, and niobium gives this alloy a range of corrosion-resistant and mechanical advantages that make it one of the most specified nickel superalloys in demanding industries.
| Property | Details |
|---|---|
| Pitting and Crevice Corrosion Resistance | Outstanding resistance to seawater pitting and crevice corrosion in both stagnant and flowing conditions. Suitable for offshore and subsea service. |
| Chloride Ion Stress Corrosion Cracking | Immune to chloride-induced stress corrosion cracking, making it ideal for marine and chemical plant environments. |
| Oxidation Resistance | Resistant to oxidation and scaling up to 982 degree C (1800 degree F). Suitable for high-temperature furnace and exhaust applications. |
| High Creep-Rupture Strength | Maintains structural integrity under sustained high stress at elevated temperatures. Suitable for power generation and boiler components. |
| Fatigue Strength | Excellent fatigue and stress-corrosion cracking resistance. Commonly used for flanges in cyclic pressure service. |
| Sour Gas Service | Solution-annealed Inconel 625 complies with NACE MR0175 / ISO 15156 for H2S sour gas environments. |
| Cryogenic Toughness | Maintains toughness from cryogenic temperatures up to 982 degree C, making it suitable for LNG applications. |
| Non-Magnetic | Inconel 625 is non-magnetic, which makes it suitable for sensitive electronic and defense-related applications. |
Applications of Inconel 625 Flanges
UNS N06625 flanges are used across industries where corrosion resistance, high-temperature strength, and long service life are critical requirements.
- Oil and Gas Production
- Aerospace and Defense
- Chemical Processing
- Offshore and Subsea Engineering
- Petrochemical Plants
- Power Generation
- Marine Engineering
- Nuclear Reactors
- Pollution Control Equipment
- Fertilizer Plants
- Pharmaceutical Equipment
- Heat Exchangers
- Pulp and Paper Industry
- Waste Heat Recovery
- Gas Processing Plants
- Condensers
- Specialty Chemical Plants
- Sour Gas (H2S) Service
Inconel 625 Flanges Equivalent Grades
| Standard | Country | Grade Designation | Common Name |
|---|---|---|---|
| UNS | North America | N06625 | Alloy 625 |
| JIS | Japan | NCF 625 | Inconel 625 |
| AFNOR | France | NC22DNB4M | Alloy 625 |
| BS | United Kingdom | NA 21 | Nickel Alloy 625 |
| WNR / DIN | Germany / Europe | 2.4856 | NiCr22Mo9Nb |
| EN | Europe | NiCr22Mo9Nb | Haynes 625 |
| GOST | Russia | KhN75MBTYu | EI602 |
Inconel 625 Flange Testing Method
- Hardness Test
- Positive Material Identification
- Mechanical Testing
- Intergranular Corrosion Test
- Flattening Test
- Radiography Test
- Eddy Current Testing
- Bend Test
- Flaring Test
- Sulfide Stress Corrosion Cracking
- Dye Penetrant Test
- Impact Test
- Ultra Sonic Test
- HIC Test
- Pitting Resistance Test
- Macro Test
- Micro Test
- Chemical Analysis
Frequently Asked Questions
What is the standard for Inconel 625 Flanges?
Inconel 625 flanges are manufactured to ASTM B564 / ASME SB564. Dimensional standards include ASME B16.5, B16.47, and B16.36 depending on size and type.
What sizes are available for UNS N06625 flanges?
We supply Inconel 625 flanges from 1/2" to 48" NPS (15NB to 1200NB, DN15 to DN1200) in all pressure classes from 150# to 2500#.
Are Inconel 625 flanges suitable for sour gas service?
Yes. Solution-annealed UNS N06625 flanges comply with NACE MR0175 / ISO 15156 for sour gas (H2S) service and offer strong resistance to sulfide stress cracking.
What is the difference between Grade 1 and Grade 2 Inconel 625 flanges?
Grade 1 is annealed at 871 deg C minimum. Grade 2 is solution annealed at 1093 deg C minimum and offers higher tensile and yield strength values for demanding service.
Request a Quote for Inconel 625 Flanges
Amardeep Steel Centre stocks a wide range of ASTM B564 UNS N06625 flanges ready for immediate dispatch. Whether you need standard sizes or custom-engineered flanges for critical service conditions, our team can assist with product selection, certifications, and export documentation.
