Comparison between Inconel 600 and 625 pipe fittings
Comparison between Inconel 600 and 625 pipe fittings
The main difference between Inconel 600 and 625 fittings lies in their chemical composition. Inconel 625 has a higher chromium and molybdenum content, resulting in superior strength, weldability, and corrosion resistance, making it suitable for a wider range of corrosive environments, including marine applications. Inconel 600, on the other hand, is a more economical option, known for its good high-temperature stability and resistance to certain corrosive environments, such as high-temperature steam and strong alkalis.
Is Inconel 600 better than SS 304?
Stainless steel 304 is a versatile and cost-effective general-purpose material, while Inconel 600 performs exceptionally well under extreme conditions. Understanding the properties and applications of these materials will help you choose the right alloy for your needs.
ASME SB366 Inconel 600/601/625/825 Pipe Fittings Specifications :
| Specifications : ASTM B366, ASTM SB 366, ASTM B564, ASME SB564 |
| Dimensions : ANSI/ASME B16.9, B16.28, MSS-SP-43. |
| Size : ½"NB to 24″NB in Sch 10s, 40s, 80s, 160s, XXS. |
| Types : Seamless / Welded / Fabricated |
| Grade : Inconel 600 – UNS N06600, Inconel 625 – UNS N06625 |
Inconel 600, 625 Pipe Fittings Grade Specifications
| STANDARD | UNS | WERKSTOFF NR. | BS | JIS | AFNOR | GOST | EN |
| Inconel 600 | N06600 | 2.4816 | NA 13 | NCF 600 | NC15FE11M | МНЖМц 28-2,5-1,5 | NiCr15Fe |
| Inconel 625 | N06625 | 2.4856 | NA 21 | NCF 625 | NC22DNB4M | ХН75МБТЮ | NiCr22Mo9Nb |
Inconel Buttweld Pipe Fittings
Seamless / Welded 100% Radiography Tested
| Products | Size | |
| Inconel Elbows – Long Radius | Inconel Stub Ends | Sizes 1/2″ – 48″ |
| Inconel Elbows – Short Radius | Inconel Cross | |
| Inconel Reducing Elbows | Inconel Reducing Crosses | |
| Inconel 45° Elbows | Inconel 180° LR Return Bends | |
| Inconel Tees | Inconel 180° SR Return Bends | |
| Inconel Equal Tees | Inconel Pipe Bends / Piggable Bends | |
| Inconel Reducers | Inconel Seamless Fittings | |
| Inconel Concentric Reducers | Inconel Pipe Nipples | |
| Inconel Eccentric Reducers | Inconel 5D Elbow | |
| Inconel 3D Elbow | Inconel End Caps | |
| Feature | Inconel 600 | Inconel 625 |
|---|---|---|
| Primary Use | High-temperature applications, general corrosion resistance | High-strength, high-corrosion applications |
| Corrosion Resistance | Good resistance to high-temperature environments, but less resistant to high chlorides | Excellent resistance to a wide range of corrosive media, including chloride stress-corrosion cracking and pitting |
| Strength | Good mechanical properties, but lower strength than 625 | Very high strength and fatigue strength |
| Weldability | Good, but 625 is superior | Outstanding, with superior fabricability |
| High-Temperature Performance | Excellent stability in high temperatures | Superior high-temperature strength and oxidation resistance |
| Cost | Lower cost | Considerably higher cost |
| Typical Applications | Heat exchangers, oil refining, caustic alkali production, boiling water reactors | Chemical processing, aerospace, marine environments, and general-purpose structural piping |
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
Gnee Steel is a supplier of GH4169 alloy, offering a wide range of products including: seamless pipe (sizes: 4-219 mm; thickness: 0.5-20 mm); welded pipe (sizes: 5.0-1219.2 mm; thickness: 0.5-20 mm); plates (thickness: 0.1 to 100 mm; width: 10-2500 mm); strips; alloy round bars (diameter: 3-800 mm); flat bars (thickness: 2-100 mm; width: 10-500 mm); hexagonal bars (size: 2-100 mm); wire rods; and extruded profiles. We collaborate with steel mills to provide our customers with GH4169 alloy products that meet or exceed numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS standards.
Gnee Steel stocks and sells GH4169, pipes, plates, strips, round bars, flat bars, forged billets, hexagonal steel, wire rods, and extruded profiles. Please feel free to contact us at ss@gneesteel.com for a quote.
