Comparison of Inconel 718 and Incoloy 825 Pipes
Comparison of Inconel 718 and Incoloy 825 Pipes
Inconel 718 and Incoloy 825 tubing are specialized corrosion-resistant alloys. Inconel 718 (with a nickel content of 50% or more) offers excellent and cost-effective corrosion resistance in acidic/marine environments. 718 is ideal for aerospace/turbine applications, while 825 is suitable for chemical processing.
Is Inconel 825 magnetic?
Inconel 825 is generally not magnetic. This alloy is a nickel-iron-chromium alloy with added molybdenum, copper, and titanium, elements that help improve its overall corrosion resistance and maintain its non-magnetic nature.
Inconel 718 seamless and welded steel pipes possess exceptional resistance to oxidation, corrosion, and stress cracking. These Inconel 718 seamless and welded steel pipes have a tensile strength of 130,000 psi and a yield strength of 75,000 psi. Inconel 718 steel pipes have a wide range of applications across various industries. Both seamless and welded steel pipes are made from Inconel stainless steel. These Inconel 718 steel pipes exhibit superior performance and an extremely high melting point.
Inconel 825 possesses similar excellent properties. Inconel 825 effectively resists the effects of chemical processes such as corrosion, moisture, and oxidation. Inconel 825 can operate stably at temperatures up to 1020 degrees Celsius. Inconel 825 has a tensile strength of 80,000 psi and a yield strength of 32,000 psi. It exhibits excellent resistance to crevice corrosion, chemical corrosion, and stress cracking caused by climate change. These pipelines are widely used in fields such as oil and gas extraction, chemical industry, and radioactive waste treatment.
Inconel 718 pipe processing and packaging
Specification of Inconel 718/ 825 Alloy Pipe
| Specifications | ASTM B167, B517 / ASME SB167, SB517 |
| Dimensional specification | ANSI/ASME B36.19M, ANSI/ASME B36.10M |
| Size | 1 / 8" NB - 24" NB |
| Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
| Manufacturing Shapes | Hydraulic, Round, Square, Hex, Honed |
| Manufacturing Techniques | Normalized & as Rolled |
| Schedule Thickness Range | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| End Types | Plain End, Beveled End, Treaded One End, TBE (Treaded Both Ends) |
| Surface Finish | No.1, No.4, No.8 Mirror Finish, 2B |
Inconel 718 and Incoloy 825 pipes are available in stock
ASTM B167 Inconel 718 Seamless Pipe
Incoloy 825 Welded Pipe
Inconel 718 IBR Pipe
718 Inconel Tube
DIN 2.4668 Round Pipe
ASME SB167 Inconel 718 Square Pipe
Inconel 718 Rectangular Pipe
UNS N08825 Custom Pipe
Inconel 718 Polished Pipe
Inconel 718 / 825 Tubes Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Inconel 718 | 0.08 max | 0.35 max | 0.35 max | 0.015 max | 0.30 | - | 50 - 55 | 17 - 21 | 0.20-0.80 | 0.65-1.15 |
| Incoloy 825 | 0.05 max | 1.00 max | 0.5 max | 0.03 max | 1.50 – 3.00 | 22.00 min | 38.00 – 46.00 | 19.50 – 23.50 | 0.02 max | 0.06 – 1.20 |
Inconel 718 / 825 Tubes Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 718/825 | 8.14 g/cm3 | 1400 °C (2550 °F) | Psi – 80,000 , MPa – 550 | Psi – 32,000 , MPa – 220 |
Dimensions Standard Of Inconel 718/ 825 Pipe
| Nominal Pipe Size | Outside Diameter (mm) | Nominal Wall Thickness Schedule | |||||||||||||||||
| NPS | DN | OD | SCH5s | SCHl0s | SCH 10 | SCH 20 | SCH 30 | SCH40s | SCH STD | SCH 40 | SCH 60 | SCH80s | SCH XS | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | SCH XXS |
| 1/8 | 6 | 10.3 | 1.24 | 1.73 | 1.73 | 1.73 | 2.41 | 2.41 | 2.41 | ||||||||||
| 1/4 | 8 | 13.7 | 1.65 | 2.24 | 2.24 | 2.24 | 3.02 | 3.02 | 3.02 | ||||||||||
| 3/8 | 10 | 17.1 | 1.65 | 2.31 | 2,31 | 2.31 | 3.20 | 3.20 | 3.20 | ||||||||||
| 1/2 | 15 | 21.3 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 | |||||||
| 3/4 | 20 | 26.7 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 | |||||||
| 1 | 25 | 33.4 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 | |||||||
| 1 1/4 | 32 | 42.2 | 1.65 | 2.77 | 3.56 | 3.56 | 3,56 | 4.85 | 4.85 | 4.85 | 6.35 | 9.70 | |||||||
| 1 1/2 | 40 | 48.3 | 1.65 | 2.77 | 3.68 | 3.68 | 3.68 | 5.08 | 5.08 | 5.08 | |||||||||
Pressure Ratings Of Inconel 718/ 825 Pipe
| Schedule of Pipe | Size of Seamless Pipe (inches) |
(°F) Temperature | ||||||||
| 200 | 100 | 300 | 500 | 400 | 600 | 700 | 650 | 750 | ||
| 80 | 1" | 3634 | 4213 | 3265 | 2791 | 3002 | 2659 | 2528 | 2580 | 2501 |
| 40 | 1" | 2629 | 3048 | 2362 | 2019 | 2171 | 1924 | 1824 | 1867 | 1810 |
| 40 | 1.5" | 1947 | 2257 | 1750 | 1496 | 1608 | 1425 | 1354 | 1383 | 1340 |
| 160 | 1" | 5296 | 6140 | 4759 | 4068 | 4375 | 3876 | 3684 | 3761 | 3646 |
| 160 | 1.5" | 3984 | 4619 | 3580 | 3060 | 3291 | 2916 | 2772 | 2829 | 2743 |
| 80 | 1.5" | 2744 | 3182 | 2466 | 2108 | 2267 | 2009 | 1909 | 1949 | 1889 |
| 80 | 2" | 2369 | 2747 | 2129 | 1820 | 1957 | 1734 | 1648 | 1682 | 1631 |
| 40 | 2" | 1640 | 1902 | 1474 | 1260 | 1355 | 1201 | 1141 | 1165 | 1129 |
| 40 | 3" | 1558 | 1806 | 1400 | 1196 | 1287 | 1140 | 1084 | 1106 | 1072 |
| 160 | 2" | 3880 | 4499 | 3486 | 2980 | 3205 | 2840 | 2699 | 2755 | 2671 |
| 160 | 3" | 3312 | 3840 | 2976 | 2544 | 2736 | 2424 | 2304 | 2352 | 2280 |
| 80 | 3" | 2202 | 2553 | 1979 | 1691 | 1819 | 1612 | 1532 | 1564 | 1516 |
| 80 | 4" | 1909 | 2213 | 1715 | 1466 | 1577 | 1397 | 1328 | 1355 | 1314 |
| 40 | 4" | 1321 | 1531 | 1187 | 1014 | 1091 | 967 | 919 | 938 | 909 |
| 40 | 5" | 1158 | 1342 | 1040 | 889 | 956 | 847 | 805 | 822 | 797 |
| 160 | 4" | 3106 | 3601 | 2791 | 2386 | 2566 | 2273 | 2161 | 2206 | 2138 |
| 80 | 5" | 1709 | 1981 | 1535 | 1312 | 1411 | 1250 | 1189 | 1213 | 1176 |
| 160 | 5" | 2945 | 3414 | 2646 | 2262 | 2433 | 2155 | 2049 | 2091 | 2027 |
| 80 | 6" | 1650 | 1913 | 1483 | 1267 | 1363 | 1208 | 1148 | 1172 | 1136 |
| 40 | 6" | 1052 | 1219 | 945 | 808 | 869 | 770 | 732 | 747 | 724 |
| 40 | 8" | 926 | 1073 | 832 | 711 | 765 | 678 | 644 | 657 | 637 |
| 160 | 6" | 2836 | 3289 | 2549 | 2179 | 2343 | 2076 | 1973 | 2014 | 1953 |
| 160 | 8" | 2738 | 3175 | 2460 | 2103 | 2262 | 2004 | 1905 | 1944 | 1885 |
| 80 | 8" | 1459 | 1692 | 1311 | 1121 | 1205 | 1068 | 1015 | 1036 | 1005 |
| 80 | 10" | 1388 | 1609 | 1247 | 1066 | 1147 | 1016 | 966 | 986 | 956 |
| 40 | 10" | 840 | 974 | 755 | 945 | 694 | 615 | 584 | 596 | 578 |
| 160 | 10" | 2714 | 3147 | 2439 | 2085 | 2242 | 1986 | 1880 | 1927 | 1868 |
Price Of Inconel 718/ 825 Pipe & Tube
| High Nickel Alloys Seamless Pipe | USD $8.11 - $20.21 / kg (FOB Price) on request |
| High Nickel Alloys Welded Pipe | USD $8.11 - $20.21 / kg (FOB Price) on request |
| High Nickel Alloys Hollow Pipe | USD $8.11 - $20.21 / kg (FOB Price) on request |
| High Nickel Alloys Tube | USD $8.11 - $20.21 / kg (FOB Price) on request |
| High Nickel Alloys ERW Pipe | USD $8.11 - $20.21 / kg (FOB Price) on request |
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 also supplies custom Inconel 718 pipes in various sizes and specifications. Please send us your drawings for a quote!
