Key comparison of Inconel 600/601 fittings
Inconel 600 tubing offers broad corrosion resistance, good weldability, and cost-effectiveness, making it suitable for various high-temperature applications. In contrast, Inconel 601 tubing, with its added aluminum content, exhibits superior oxidation and carburization resistance, performing exceptionally well in extreme oxidizing and thermal cycling environments. Therefore, 601 is better suited for furnaces and heat exchangers, while 600 is ideal for general chemical/nuclear applications where cost and versatility are important considerations.
What is Inconel 601 material?
Inconel 601 nickel-chromium-iron alloy (UNS N06601/W.Nr. 2.4851) is a general-purpose engineering material suitable for applications requiring heat and corrosion resistance. A notable characteristic of Inconel 601 alloy is its excellent resistance to high-temperature oxidation.
Inconel 600 / 601 Fittings Specification
Standards : ASTM B366/ ASME SB366, ASTM B564/ ASME SB564
Size : ½"NB – 24"NB
Dimensions : : ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
ANSI B 16.5, BS 1560. BS 10, IS 6392, B-2.1 NPT, API, DIN, JIS. MSS SP 44
Thickness : SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Type : Seamless / Welded / Socketweld / Threaded / Fabricated
Pressure Rating : Threaded End-2000lb/ 3000lb/ 6000lbs
Socket-weld End-3000/ 6000/ 9000lbs
Thread Type : NPT, BSPT, BSPP
Bending Radius : R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom
Inconel 600 / 601 Fittings Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | EN | BS | GOST | AFNOR | OR |
| Inconel 600 | 2.4816 | N06600 | NCF 600 | NiCr15Fe | NA 13 | МНЖМц 28-2,5-1,5 | NC15FE11M | ЭИ868 |
| Inconel 601 | 2.4851 | N06601 | NCF 601 | NiCr15Fe | NA 13 | МНЖМц 28-2,5-1,5 | NC15FE11M | ЭИ868 |
Inconel 600 / 601 Fittings Types
Inconel 600 / 601 Elbow
Inconel 600 / 601 Cross
Inconel 600 / 601 Tee
Inconel 600 / 601 Reducer
Inconel 600 / 601 Coupling
Inconel 600 / 601 Pipe Cap
Inconel 600 / 601 Fittings Dimensions
| Nominal Pipe Size | All Fittings | All Fittings | All Fittings | Elbows/ Tees | 180° Return Bends | 180° Return Bends | 180 Deg Return Bends | Reducers | Caps |
|---|---|---|---|---|---|---|---|---|---|
| NPS | O.D. at Bevel (1), (2) | I.D. at End (1), (3), (4) | Wall Thickness (3) | Centre-to-End Dimension A,B,C,M | Centre-to-Centre O | Back-to-Face K | Alignment of Ends U | Overall Length H | Overall Length E |
| ½ to 2½ | 0.06 -0.03 | 0.03 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 3 to 3 ½ | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 4 | 0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.12 |
| 5 to 8 | 0.09 -0.06 | 0.06 | Not less than 87.5% of nominal thickness | 0.06 | 0.25 | 0.25 | 0.03 | 0.06 | 0.25 |
| 10 to 18 | 0.16 -0.12 | 0.12 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 20 to 24 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.09 | 0.38 | 0.25 | 0.06 | 0.09 | 0.25 |
| 26 to 30 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.12 | … | … | … | 0.19 | 0.38 |
| 32 to 48 | 0.25 -0.19 | 0.19 | Not less than 87.5% of nominal thickness | 0.19 | … | … | … | 0.19 | 0.38 |
Chemical Composition of Inconel 600 / 601 Fittings
| Grade | Cu | Ni | Fe | Mn | C | S | Si | Cr |
| Alloy 600 | 0.15 max | 72.0 min | 6.0 – 10.0 | 1.0 max | 0.15 max | 0.015 max | 0.5 max | 14.0 – 17.0 |
| Alloy 601 | 0.10 max | 58.0 – 63.0 | Balance | 1.0 max | 0.10 max | 0.015 max | 0.5 max | 21.0 – 25.0 |
Mechanical Composition of Inconel 600 / 601 Fittings
| Grade | Tensile Strength (MPa) | Yield Strength (0.2%Offset)(MPa) | Elongation % min. |
| Inconel 600 | Psi – 95,000 , MPa – 655 | Psi – 45,000 , MPa – 310 | 40% |
| Inconel 601 | Psi – 80,000 , MPa – 550 | Psi – 30,000 , MPa – 205 | 30% |
Inconel 600 Pipe Fittings (UNS N06600)
Main Advantages: Broad corrosion resistance (including resistance to chloride stress corrosion cracking), good ductility, excellent weldability, and high strength over a wide temperature range from cryogenic to high temperatures.
Best Uses: Chemical processing, marine applications, nuclear components, and general high-temperature applications where cost-effectiveness is important.
Inconel 601 Pipe Fittings (UNS N06601)
Main Advantages: Excellent resistance to oxidation, carburization, and thermal cycling at extremely high temperatures; slightly higher strength in some cases.
Best Uses: Furnace components (radiant tubes, muffles), heat exchangers, and applications in high-temperature and oxidizing environments.
Main Comparison between Inconel 601 and Inconel 600 Pipe Fittings
Oxidation Resistance: Due to the presence of aluminum, 601 has significantly better oxidation resistance than 600.
Cost: 600 is generally cheaper and more readily available than 601.
Applications: 600 is suitable for a wide range of applications; 601 is suitable for extreme high-temperature/oxidizing environments.
Mechanical Properties: Similar, but in some forms (e.g., bar stock), 601 may have slightly higher strength.
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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