What are the differences between Inconel 601 forged pipe fittings and Incoloy 800 flanges?
What are the differences between Inconel 601 forged pipe fittings and Incoloy 800 flanges?
Both Inconel 601 pipes and Incoloy 800 flanges are high-temperature nickel-chromium alloys, but due to the higher nickel content and the addition of aluminum in Inconel 601 pipes, they exhibit superior high-temperature oxidation resistance, mechanical strength, and carburization resistance, making them ideal for extreme high-temperature environments. In contrast, Incoloy 800 pipes (especially 800H/HT) have a higher iron content, are less expensive, offer better resistance to aqueous corrosion/stress corrosion cracking, and are easier to process, making them suitable for general chemical, marine, and oil/gas applications.
What is incoloy 800?
incoloy 800 alloy is a nickel, iron, and chromium alloy. This alloy remains stable and maintains its austenitic structure even after prolonged exposure to high temperatures.
What are Inconel 601 Forged Pipe Fittings?
Inconel 601 forged pipe fittings are made from a nickel-chromium alloy and possess extremely high heat and corrosion resistance. These fittings exhibit superior mechanical properties, making them ideal for high-temperature applications such as power plants and aircraft manufacturing. They have excellent thermal stability, capable of withstanding temperatures up to 2100°F without significant deformation or performance degradation. Furthermore, the exceptional strength of these forged fittings makes them ideal for harsh environments involving extreme pressure and high vibration.
What are Incoloy 800 Flanges?
Incoloy 800 flanges are pipe fittings used to connect two sections of pipe or terminate fluid flow. They are typically made from special alloy steels such as Incoloy 800 and possess unique characteristics such as excellent corrosion resistance, high strength, and outstanding thermal stability. These unique properties make them ideal for many industries, including petrochemical plants, refineries, power plants, chemical plants, and more. Additionally, they are more cost-effective compared to other pipe fittings because they can be reused multiple times without performance degradation.
Standard Specification For Inconel 601 Forged Fitting
Specifications : ASTM B564 & ASME SB564
Standard : ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
Size : 1/8" NB to 4" NB (Socketweld & Screwed-Threaded)
Class : 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Type : Socketweld Fittings, Screwed-Threaded Fittings
Standard Specification For Incoloy 800 Flanges
Specifications : ASTM B564 / ASME SB564
Dimensions : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class/Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
Type : Slip on flanges, Socket weld flanges, Forged flanges, Blind flanges, Welding neck flange, Ring type joint flange, Spectacle blind flange, Reducing flange, Threaded / Screwed flange, Tongue and Groove flange, Long weld neck flange, Flat flange, Industrial flanges, Plate flange, ASME B16.5 flanges.
601 Inconel Forged Fittings Equivalent Grades
| STANDARD | UNS | WNR. | AFNOR | EN | JIS | BS | GOST | OR |
| Alloy 601 | N06601 | 2.4851 | NiCr23Fe | NiCr15Fe | NCF 601 | NA 49 | XH60BT | ЭИ868 |
800 Incoloy Flanges Equivalent Grades
| 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 |
Inconel 601 (Forged Pipe Fittings)
Main Advantages: Excellent resistance to high-temperature oxidation (up to 2200°F) and carburization, forming a stable oxide layer.
Composition: High nickel content (over 50%), containing significant amounts of chromium and a small amount of aluminum.
Properties: High strength, good machinability, metallurgical stability, and resistance to spalling.
Best Applications: Aerospace, gas turbines, furnace components, and other high-temperature industrial applications.
Incoloy 800 (Flanges)
Main Advantages: Good corrosion resistance, resistance to pitting, stress corrosion cracking, and acid gas corrosion.
Composition: High iron content, containing nickel and chromium, with a lower nickel content than Inconel.
Properties: Good mechanical properties at high temperatures, easy to machine, similar to stainless steel, and lower cost than Inconel.
Best Applications: Petrochemical, chemical, marine environments, and oil and gas industries.
Summary of the main differences between 601 alloy pipe fittings and Incoloy 800 flanges:
Heat and corrosion resistance: 601 alloy performs excellently in extremely high-temperature environments; 800 alloy is more suitable for corrosive aqueous solutions/chemical corrosive environments.
Cost and machinability: 800 alloy is generally cheaper and easier to machine than Inconel alloys.
Application areas: 601 alloy is suitable for furnace/aerospace applications, while 800 alloy is suitable for chemical/marine/oil and gas industries.
Why Choose Gnee as Your Nickel-Based Alloy Supplier
✅ Over 18 years of export experience, products sold to more than 80 countries
✅ Certified by ISO, SGS, and BV
✅ Global inventory of Inconel, Hastelloy, Incoloy, and Monel alloy tubing, plates, and bars
✅ Custom processing services available – including cutting, polishing, CNC machining, and packaging
✅ Fast delivery within 7-15 days, supported by global logistics partners
📦 Packaging and Shipping
All stainless steel products are packaged using the following methods:
Wooden pallets or crates
Moisture-proof packaging
Labels with furnace number, standard, and size labels
Shipped worldwide by sea, air, or express
About Gnee Steel
Gnee Steel is a professional manufacturer of nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy 800, Incoloy 800H/HT, Incoloy 825, Monel 400, Monel K500, and other high-temperature alloy materials. We specialize in the production and sales of alloy materials. Gnee Steel's products are widely used in aerospace, chemical, power generation, automotive, nuclear energy, and other fields, and we can provide customized alloy material solutions according to customer needs. For inquiries about alloy material prices or customized alloy material solutions, please feel free to contact us via email at ss@gneemetal.com for a quote.
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