Comparison of Inconel 600/601 forged pipe fittings
Comparison of Inconel 600/601 forged pipe fittings
Both Inconel 600 and 601 forged pipe fittings are nickel-chromium alloys, but Inconel 601, due to the addition of aluminum, exhibits superior high-temperature oxidation resistance, making it more suitable for extreme high-temperature (up to 2200°F, compared to 2000°F for 600) and thermal cycling environments. Inconel 600, on the other hand, excels in resistance to chloride stress corrosion cracking (SCC) and is generally more cost-effective, making it suitable for general chemical processing applications. For furnaces and high-temperature oxidizing environments, 601 should be chosen; for high-stress chloride environments, 600 should be selected, as it is generally more common and less expensive if its performance is sufficient for the requirements.
What are the differences between Inconel 625 and 601?
Inconel 601 has a melting point of 2467°F (1350°C), while Inconel 625 has a melting point of 2375°F (1310°C). In terms of tensile strength at room temperature, Inconel 601 ranges from 590-930 MPa, while 625 has a slightly higher strength of 690-895 MPa.
Inconel 600/601 forged pipe fittings Specification
| 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) |
| Grades | Inconel 600, 601, 625, 718, 783, 690, X750 Forged Fittings |
| Type | Socketweld Fittings, Screwed-Threaded Fittings |
| Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
Inconel 600/601 forged pipe fittings Chemical Composition
| Grade | Ni | Fe | C | Mn | Si | Cu | Cr | S | Mo | Co | Al | Ti | Nb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 600 | 72.0 min | 6.0 - 10.0 | 0.15 max | 1.0 max | 0.5 max | 0.5 max | 14.0 - 17.0 | 0.015 max | - | - | - | - | - |
| 601 | 58.0 – 63.0 | Balance | 0.10 max | 1.0 max | 0.50 max | 1.0 max | 21.0 – 25.0 | 0.015 max | 8.0-10.0 | - | 1.0 – 1.7 | - | - |
Inconel 600/601 forged pipe fittings Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| Inconel 600 | 8.47 g/cm3 | 1413 °C (2580 °F) | Psi – 95,000 , MPa – 655 | Psi – 45,000 , MPa – 310 | 40 % |
| Inconel 601 | 8.1 g/cm3 | 1411 °C (2571 °F) | Psi – 80,000 , MPa – 550 | Psi – 30,000 , MPa – 205 | 30 % |
When to choose which material:
In general corrosive environments, high-stress conditions (such as chloride stress corrosion cracking), and applications like heat exchangers, Inconel 600 is chosen if cost is a major consideration and extreme oxidation is not a primary concern.
In furnace components, industrial heating, and applications with temperatures above 2000°F (1093°C), Inconel 601 is chosen if oxidation resistance and thermal shock resistance are critical.
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.
Square Meters Built
Enterprise Employees
Years Experience
Partner countries
