Products Description
Product Specifications
| Standards | ASTM B407/ASME SB407 |
| Steel Grades | Incoloy 800H /UNS N08810 |
| Equivalent Standards | EN / DIN 1.4958,ISO 6207,JIS NCF 800H |
| Outer Diameter (OD) | 3.18mmmm-609.6mm(1/8"-24") |
| Wall Thickness (WT) | 0.5mm-55mm |
| Length | up to 12 m, or customized |
| Surface Treatment | Pickled |
| Production Process | Cold drawn |
| Condition | Solution Annealed,Cold Worked |
Incoloy 800H (UNS N08810) is a nickel-iron-chromium alloy-an upgraded version of the Incoloy 800 series-whose high-temperature performance has been enhanced through the controlled regulation of carbon content (0.05–0.10%) and specific heat treatment processes. It is primarily composed of 32–35% nickel, 19–23% chromium, and 30–35% iron, along with minor additions of elements such as aluminum and titanium. This unique alloy composition endows it with exceptional heat resistance and stability.
Incoloy 800H pipe is capable of long-term operation within a temperature range of 650–900°C; at temperatures exceeding 600°C, it exhibits excellent creep-rupture strength, as well as superior resistance to oxidation, nitridation, and corrosion under carburizing conditions.
Customized Services
- We offer custom bending services for complex shapes, including U-shaped, S-shaped, and spiral configurations.
- We provide various surface treatment options-such as hot-dip galvanizing, electroplating (nickel, chrome, and copper), and thermal spray wear-resistant coatings-to enhance the corrosion resistance and wear resistance of the tubing.
- We support customization of dimensions and specifications, as well as custom packaging and logo branding services.
- We offer end-finishing services-including beveling, chamfering, and threading-as well as general machining services such as turning and drilling.
Chemical Composition
| Element | Ni (%) | Cr (%) | Fe (%) | C (%) | Al (%) | Ti (%) | Mn (%) | Si (%) | S (%) | Cu (%) |
| UNS N08800 | 30.0–35.0 | 19.0–23.0 | Balance | ≤0.10 | 0.15–0.60 | 0.15–0.60 | ≤1.5 | ≤1.0 | ≤0.015 | ≤0.75 |
| UNS N08120 | 30.0–35.0 | 19.0–23.0 | Balance | 0.05–0.10 | 0.15–0.60 | 0.15–0.60 | ≤1.5 | ≤1.0 | ≤0.015 | ≤0.75 |
| UNS N08801 | 30.0–35.0 | 19.0–23.0 | Balance | 0.06–0.10 | 0.25–0.60 | 0.25–0.60 | ≤1.5 | ≤1.0 | ≤0.015 | ≤0.75 |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) | Hardness (HB) |
| UNS N08800 | ≥520 | ≥210 | ≥30 | ≤200 |
| UNS N08120 | ≥515 | ≥205 | ≥30 | ≤200 |
| UNS N08801 | ≥520 | ≥205 | ≥30 | ≤200 |
Possible Alternative Grades
- For general high-temperature environments up to 650°C, Incoloy 800 (UNS N08800) is a suitable choice, particularly for auxiliary piping systems in chemical plants characterized by low pressure and relatively mild corrosivity.
- 310S stainless steel offers superior resistance to high-temperature oxidation compared to Incoloy 800H; it is well-suited for piping systems in equipment such as high-temperature roasting furnaces and glass melting furnaces, and is available at a lower cost than Incoloy 800H.
- In harsh corrosive chemical environments-such as those found in marine chemical processing or waste incineration facilities-Hastelloy C-276 is the preferred choice, as it exhibits corrosion resistance superior to that of Incoloy 800H.
application areas
ASTM B407 Incoloy 800H seamless tubes possess high-temperature resistance, oxidation resistance, and the ability to withstand carburization and corrosion in harsh environments; they are widely utilized in the chemical industry, specifically for:
High-temperature transport pipelines
Heat treatment furnace tubes
Ethylene cracking furnace components
Heat exchangers and condensers
Hydrocracking unit piping
Fertilizer plant production pipelines
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
FAQ
Q: What shapes can be produced through special section processing, and what is the dimensional accuracy?
A: We can process square, rectangular, elliptical, or custom-shaped cross-sections. For square and rectangular tubes, dimensional accuracy is controlled within ±0.2 mm. For elliptical tubes, ellipticity is controlled within ±0.5%. Custom-shaped tubes are tailored to meet the specific requirements of various chemical industry applications.
Q: How is the quality of the tubing ensured?
A: Standard testing includes UT (Ultrasonic Testing), ET (Eddy Current Testing), hydrostatic testing, PMI (Positive Material Identification), and dimensional inspection. Upon request, additional tests-such as grain analysis, creep testing, and intergranular corrosion testing-can also be provided.
Q: What welding processes are used for Incoloy 800H seamless tubes?
A: We employ welding processes such as TIG and MIG. Welding parameters are strictly controlled throughout the process, and post-weld non-destructive testing-including ultrasonic and radiographic inspections-is conducted to ensure that weld quality meets both chemical industry standards and client specifications.
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