Gnee Steel is a reputable company in the industry, dedicated to providing Incoloy 800/825 flange series products to global customers. We are a supplier, exporter, stockist, and manufacturer, offering our products at competitive prices. Gnee Steel also provides various customized sizes and shapes to meet customer requirements.
What are the differences between Incoloy 825 flanges and Incoloy 800 flanges
What are the differences between Incoloy 825 flanges and Incoloy 800 flanges
The main difference between Incoloy 825 and 800 flanges lies in their corrosion resistance and high-temperature performance. Due to its higher molybdenum and copper content, Incoloy 825 flanges have superior corrosion resistance to acids (sulfuric acid, phosphoric acid) and pitting caused by chlorides, making them ideal for marine and chemical applications. In contrast, Incoloy 800 alloy flanges exhibit better high-temperature creep rupture strength, carburization resistance, and overall high-temperature performance.
What are the uses of Inconel 825?
INCOLOY 825 alloy exhibits excellent resistance to general and localized corrosion under various conditions, making it suitable for a wide range of applications. Its applications include chemical processing, pollution control, oil and gas extraction, acid production, pickling operations, nuclear fuel reprocessing, and radioactive waste treatment.
What are Incoloy 825 flanges?
Incoloy 825 flanges are corrosion-resistant nickel-based alloy flanges. They are made from austenitic stainless steel and contain chromium, iron, and other elements such as molybdenum and copper. These alloys offer excellent protection against pitting, crevice corrosion, and stress corrosion cracking in highly corrosive environments. Incoloy 825 flanges also possess good mechanical properties, making them ideal for demanding applications such as chemical processing equipment and nuclear fuel handling components.
What are Incoloy 800 flanges?
Incoloy 800 flanges are high-temperature flanges made from a nickel-iron-chromium alloy with added aluminum and titanium. They offer excellent corrosion resistance, oxidation resistance, and carburization resistance at temperatures up to 1100°F (593°C). Therefore, these flanges are ideal for refineries, petrochemical plants, and other industries that handle extreme temperatures. Furthermore, Incoloy 800 flanges maintain impressive tensile strength and good fatigue resistance even after prolonged exposure to harsh environments.
Incoloy 800/800H/800HT/825 Flanges Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | GOST | AFNOR | JIS | BS | EN | OR |
|---|---|---|---|---|---|---|---|---|
| Incoloy 800 | 1.4876 | N08800 | ЭИ670 | Z8NC32-21 | NCF 800 | NA 15 | X10NiCrAlTi32-20 | XH32T |
| Incoloy 825 | 2.4858 | N08825 | ЭП703 | NFE30C20DUM | NCF 825 | NA 16 | NiCr21Mo | XH38BT |
Incoloy 800 / 825 Pipe Flanges Specification
| Standards | ASTM, ASME |
| Designation | B564, SB564 |
| Dimension Standard | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standards | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges etc. |
| Flange Face Type | Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) |
| Size | 1/2" (15 NB) to 48" (1200NB) |
| Class | Class 150, Class 300, Class 400, Class 600, Class 900, Class1500, Class 2500 | PN6, PN10, PN16, PN25, PN40, PN64 etc. |
Incoloy 800 / 825 Flanges Chemical Composition
| Grade | C | Fe | Si | Mn | S | Al | Ti | Cu | Cr | Ni |
| 800 | 0.1 | 39.5 min | 1.0 | 1.5 | 0.015 | 0.15-0.60 | 0.15-0.60 | 0.75 | 19-23 | 30-35 |
| 825 | 0.05 | 22.0 min | 0.5 | 1.0 | 0.03 | 0.2 | 0.6 – 1.2 | 1.5 – 3.0 | 19.5 – 23.5 | 38.0 – 46.0 |
Incoloy 800 / 825 Flanges Mechanical Properties
| Grade | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 800 | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi - 30,000 , MPa - 205 | Psi - 75,000 , MPa -520 | 30 % |
| 825 | 8.47 g/cm3 | 1413 °C (2580 °F) | Psi - 45,000 , MPa - 310 | Psi - 95,000 , MPa -655 | 40 % |
Grade 800 / 825 Forged and Plate Flange
| Incoloy Flanges Types | Size | |
| ASTM B564 Incoloy Weld Neck Flanges | ASTM B564 Incoloy Reducing Flanges | Sizes 1/8″ – 36″ Raised Face or Flat Face |
| ASTM B564 Incoloy Slip-On Flanges | ASTM B564 Incoloy Lap Joint Flanges | |
| ASTM B564 Incoloy Blind Flanges | ASTM B564 Incoloy Threaded Flanges | |
| ASTM B564 Incoloy Socket Weld Flanges | ASTM B564 Incoloy Square Flanges | |
| ASTM B564 Incoloy Orifice Flanges | ASTM B564 Incoloy Ring Type Joint Flanges | |
| ASTM B564 Incoloy Forged Flanges | ASTM B564 Incoloy Plate Flanges | |
Gnee Steel is a professional manufacturer of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power, automotive, and nuclear energy industries, and we can provide customized alloy material solutions according to customer needs. For alloy material price inquiries or to request customized alloy material solutions, please feel free to contact us at ru@gneesteelgroup.com for a quote.