Nickel alloys are widely used in various industries due to their excellent resistance to oxidation and corrosion. Among the many types of nickel alloys, Inconel 800 and 825 are popular choices for many applications. Inconel 800/825 Flanges are excellent for applications requiring high strength and resistance to high-temperature and corrosive environments. Adding elements such as aluminium, chromium, and molybdenum in these flanges enhance their corrosion resistance, making them ideal materials for coastal and offshore regions, chemical processing, and oil and gas production.
Inconel 800 Flanges Features
Inconel 800 flanges are made from nickel, chromium, and iron. They are known for their excellent strength and resistance to high-temperature environments. Inconel 800 flanges are often used in power generation, chemical processing, and oil and gas industries. They are also resistant to stress-corrosion cracking, making them an ideal choice for harsh environments.
Table Content
Inconel 825 Flanges Corrosion Resistance
Inconel 825 flanges are a variation of the Incoloy 825 alloy and comprise nickel, chromium, and molybdenum. These flanges have excellent corrosion resistance properties and are often used in extreme environments where other materials would fail. Inconel 825 flanges are suitable for use in various environments, such as coastal and offshore regions, chemical processing, and oil and gas production.
Inconel 800 Flanges Chemical Composition
Inconel 800 flanges have a chemical composition of around 30-35% nickel, 20-23% chromium, 0.75-1.5% aluminium, and a maximum of 0.15% carbon. The addition of aluminium in Inconel 800 flanges contributes to their excellent resistance to oxidation. Inconel 800 flanges also contain small amounts of titanium, iron, and sulfur.
Inconel 825 Flanges Heat Treatment
Inconel 825 flanges are designed to withstand high-temperature applications. They are strengthened through a process of cold work and thermal treatment. This process increases the flexibility of the flanges allowing them to be used in a wide range of applications. Inconel 825 flanges can be annealed at approximately 930°C for 15 minutes per millimetre thickness.
Forging or Forming & Machining
Hole Drilling & Surface Treatment
Quality Control & Marking, Identification
Final Inspection and Packaging
| Standard | ASTM B564 / ASME SB564 |
| Dimensions | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| Flange Size Chart | 1/2" (15 NB) to 48" (1200NB), DN10~DN5000 |
| Pressure Rating | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| JIS | 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K |
| Flange Connection / Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe. |
| Origin | West Europe / Japan / Indian / USA / Korean |
| Types of Flanges | Threaded / Screwed / Forged / Plate |
| Coating | Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized |
| Test Of Flange | Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine. |
| Production technique Used | Heat treated, Forged and Machined |
| Equipment | Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc. |
| Test Certificates | EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc |
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| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN | OR |
| Incoloy 800 | 1.4876 | N08800 | NCF 800 | NA 15 | ЭИ670 | Z8NC32-21 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 800H | 1.4958 / 1.4876 | N08810 | NCF 800H | NA 15(H) | ЭИ670 | Z8NC33-21 | X5NiCrAlTi31-20 | XH32T |
| Incoloy 800HT | 1.4859 / 1.4876 | N08811 | NCF 800HT | NA 15(HT) | ЭИ670 | – | X8NiCrAlTi32-21 | XH32T |
| Incoloy 825 | 2.4858 | N08825 | NCF 825 | NA 16 | ЭП703 | NFE30C20DUM | NiCr21Mo | XH38BT |
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Alloy 800 | 0.10 max | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| Alloy 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
| Alloy 800HT | 0.06 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60ᴬ | 0.15 – 0.60ᴬ |
| Alloy 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Alloy 800 / 800H / 800HT | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
| Alloy 825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 | 30 % |
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