ASTM B407 UNS N08810 Nickel alloy welded pipe for power generation
ASTM B407 UNS N08810 Nickel alloy welded pipe for power generation
ASTM B407 UNS NO8810 is a nickel-iron-chromium alloy welded pipe used in power generation due to its high strength and excellent high-temperature corrosion resistance, including resistance to creep, rupture, oxidation, and chloride-ion stress corrosion cracking. This standard generally applies to seamless pipe, but welded pipe is also produced for various applications such as process piping, steam generators, and heat exchangers, particularly where operating temperatures exceed 593°C.
What are the ASTM specifications for INCOLOY 800?
This nickel-iron-chromium alloy maintains its austenitic microstructure even when exposed to high temperatures. According to ASTM B407, these pipes are annealed at 1800°F for 15 minutes. After annealing, Alloy 800 seamless pipe is air-cooled.
Welding and Fabrication
Welded Pipe: While ASTM B407 primarily covers seamless pipe, welded pipe is a common alternative.
Welding Techniques: Standard stainless steel methods can be used.
Performance Specifications
Temperature Range: Suitable for 800H/HT grade steel, operating temperatures up to 1100°F (593°C) are possible. Some grades, such as UNS N08811, are optimized for higher temperatures where creep and rupture resistance are required.
Mechanical Properties: Material is delivered in the annealed condition and must meet specific mechanical property requirements, such as tensile strength and yield strength, as specified in the standard.
Hydrostatic Testing: Welded pipe, like seamless pipe covered by this standard, must be hydrostatically tested to ensure it shows no signs of leakage.
Incoloy 800H Material Specification
| Specification | ASTM B163 / ASTM B407 / ASTM B423 / ASME SB163 / ASME SB407 / ASME SB423 |
| Grades | INCOLOY 800 / INCOLOY 800H / INCOLOY 800HT / INCOLOY 825 / UNS NO8800 / UNS NO8810 / UNS NO8811 / UNS NO8825 |
| Type | Cold Drawn Seamless / Welded / ERW |
| Outer Diameter Size | Seamless - 1/4" NB to 6" NB (Nominal Bore Size) Welded / ERW- 1" NB to 16" NB (Nominal Bore Size) |
| Wall Thickness | Schedule 10 to Schedule 160 |
| Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| Pipe Ends | Plain Ends / Beveled Ends |
| Delivery Conditions | As Rolled, Cold Drawn, Hot Finish, Stress Relieved, Annealed, Hardened, Tempered |
| Testing | NACE MRO175, Hardness Test, Flare, Hydrostatic Test, Eddy Current test, Grain Size Test, Eddy Current, Annealed, Tempered, Stress Relieved etc. |
ASME SB 407 Incoloy 800H Pipe sizes
| Nominal size [inches] | Outside diameter (OD) [inches] | Outside diameter (OD) [mm] | Wall thickness [inches] | Wall thickness [mm] | Weight [lb/ft] | Weight [kg/m] |
|---|---|---|---|---|---|---|
| 1/8" NPS 6 | 0.41 | 10.3 | 0.068 | 1.73 | 0.24 | 0.37 |
| 1/4" NPS 8 | 0.54 | 13.7 | 0.088 | 2.24 | 0.42 | 0.63 |
| 3/8" NPS 10 | 0.68 | 17.1 | 0.091 | 2.31 | 0.57 | 0.84 |
| 1/2" NPS 15 | 0.84 | 21.3 | 0.109 | 2.77 | 0.85 | 1.27 |
| 3/4" NPS 20 | 1.05 | 26.7 | 0.113 | 2.87 | 1.13 | 1.69 |
| 1" NPS 25 | 1.32 | 33.4 | 0.133 | 3.38 | 1.68 | 2.5 |
| 1 1/4" NPS 32 | 1.66 | 42.2 | 0.14 | 3.56 | 2.27 | 3.39 |
| 1 1/2" NPS 40 | 1.9 | 48.3 | 0.145 | 3.68 | 2.72 | 4.05 |
| 2" NPS 50 | 2.375 | 60.3 | 0.154 | 3.91 | 3.65 | 5.44 |
| 2 1/2" NPS 65 | 2.875 | 73.0 | 0.203 | 5.16 | 5.79 | 8.63 |
| 3" NPS 80 | 3.5 | 88.9 | 0.216 | 5.49 | 7.58 | 11.29 |
| 3 1/2" NPS 90 | 4.0 | 101.6 | 0.226 | 5.74 | 9.11 | 13.57 |
| 4" NPS 100 | 4.5 | 114.3 | 0.237 | 6.02 | 10.79 | 16.07 |
| 5" NPS 125 | 5.563 | 141.3 | 0.258 | 6.55 | 14.62 | 21.77 |
| 6" NPS 150 | 6.625 | 168.3 | 0.28 | 7.11 | 18.97 | 28.26 |
| 8" NPS 200 | 8.625 | 219.1 | 0.322 | 8.18 | 28.55 | 42.55 |
| 10" NPS 250 | 10.75 | 273.0 | 0.365 | 9.27 | 40.48 | 60.31 |
| 12" NPS 300 | 12.75 | 323.8 | 0.406 | 10.31 | 53.52 | 79.73 |
| 14" NPS 350 | 14.0 | 355.6 | 0.437 | 11.13 | 54.57 | 94.55 |
| 16" NPS 400 | 16.0 | 406.4 | 0.5 | 12.7 | 82.77 | 123.3 |
| 18" NPS 450 | 18.0 | 457.0 | 0.562 | 14.27 | 104.67 | 155.8 |
| 20" NPS 500 | 20.0 | 508.0 | 0.594 | 15.09 | 123.11 | 183.42 |
| 24" NPS 600 | 24.0 | 610.0 | 0.688 | 17.48 | 171.29 | 255.41 |
| 32" NPS 800 | 32.0 | 813.0 | 0.688 | 17.48 | 230.08 | 342.91 |
UNS N08810 welded pipe for power generation Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr | Al | Ti |
| Alloy 800H | 0.05 – 0.10 | 1.50 max | 1.00 max | 0.015 max | 0.75 max | 39.50 min | 30.00 – 35.00 | 19.00 – 23.00 | 0.15 – 0.60 | 0.15 – 0.60 |
Mechanical Properties of ASTM B407 UNS N08810 welded pipe for power generation
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Incoloy 800H | 7.94 g/cm3 | 1385 °C (2525 °F) | Psi – 75,000 , MPa – 520 | Psi – 30,000 , MPa – 205 | 30 % |
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.
