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| Brand Name: | YUHONG |
| Model Number: | ASTM B163 UNS N08810 Nickel Alloy Seamless Tube |
| MOQ: | 500kgs |
| Price: | NEGOTIABLE |
| Payment Terms: | L/C,T/T |
ASTM B163 / ASME SB163 UNS N08810 Alloy 800H Nickel Alloy Seamless Tube
ASTM B163 / ASME SB163 Incoloy 800H UNS N08810 Seamless Nickel Alloy Tube Chemical Composition %
| Material | Ni | Cr | Fe | C | Al | Ti |
| Incoloy 800 | 30.0-35.0 | 19.0-23.0 | ≥39.5 | ≤0.1 | 0.15-0.60 | 0.15-0.60 |
| Incoloy 800H | 30.0-35.0 | 19.0-23.0 | ≥39.5 | 0.05-0.10 | 0.15-0.60 | 0.15-0.60 |
| Incoloy 800HT | 30.0-35.0 | 19.0-23.0 | ≥39.5 | 0.06-0.10 | 0.25-0.60 | 0.25-0.60 |
ASTM B163 / ASME SB163 Incoloy 800H UNS N08810 Seamless Nickel Alloy Tube Mechanical Properties
| Material | Tensile Strength | Yield Strength | Elongation | Hardness |
| Incoloy 800 | 500 N/mm² | 210 N/mm² | 35% | 135-179HB |
| Incoloy 800H | 531 N/mm² | 200 N/mm² | 52% | 127HB |
| Incoloy 800HT | 531 N/mm² | 200 N/mm² | 52% | 127HB |
The "H" is for Heat – Specifically, a Thermal Process
While people know "H" stands for "high-temperature," the specific requirement is often overlooked:
It's Not Just Chemistry: To be legitimately called 800H, the material must be solution annealed at a minimum temperature of 2100°F (1149°C). This isn't just for stress relief; it's to achieve a specific ASTM grain size of 5 or coarser.
Application
Petrochemical & Chemical Processing: Steam methane reformer furnace tubes, pigtails, transfer lines, ethylene cracking tubes.
Power Generation: Superheater and reheater tubes in fossil fuel boilers, heat recovery steam generators (HRSGs).
Industrial Furnaces: Radiant tubes, muffles, retorts, and other heat-treating equipment.
Nuclear Power: Steam generator tubing in some reactor designs (due to its corrosion resistance).
Heat Exchangers: For severe, high-temperature service.
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