ASTM B514 Incoloy 800/800H UNS N08800/N08810 Welded Pipe
What is Incoloy 800/800H Welded Pipe?
Incoloy 800 (UNS N08800) and Incoloy 800H (UNS N08810) are nickel-iron-chromium superalloys known for their excellent resistance to oxidation, carburization, and high-temperature corrosion. These alloys are widely used in welded pipe form for applications in petrochemical, power generation, heat treatment, and chemical processing industries.
Key Features:
High-Temperature Strength: Maintains mechanical properties at elevated temperatures (up to 1100°F / 593°C for 800H).
Oxidation & Corrosion Resistance: Resists oxidation, carburization, and sulfidation in harsh environments.
Good Fabricability: Can be welded and formed using standard techniques.
Stability: Resists stress corrosion cracking and chloride-ion attack.
Chemical Composition
Element | Incoloy 800 (N08800) (%) | Incoloy 800H (N08810) (%) |
Nickel (Ni) | 30.0 - 35.0 | 30.0 - 35.0 |
Chromium (Cr) | 19.0 - 23.0 | 19.0 - 23.0 |
Iron (Fe) | Balance | Balance |
Carbon (C) | ≤ 0.10 | 0.05 - 0.10 |
Aluminum (Al) | 0.15 - 0.60 | 0.15 - 0.60 |
Titanium (Ti) | 0.15 - 0.60 | 0.15 - 0.60 |
Manganese (Mn) | ≤ 1.50 | ≤ 1.50 |
Silicon (Si) | ≤ 1.00 | ≤ 1.00 |
Sulfur (S) | ≤ 0.015 | ≤ 0.015 |
Copper (Cu) | ≤ 0.75 | ≤ 0.75 |
Mechanical Properties
Property | Incoloy 800 (N08800) | Incoloy 800H (N08810) |
Tensile Strength (MPa) | ≥ 520 | ≥ 450 |
Yield Strength (MPa) | ≥ 207 | ≥ 170 |
Elongation (%) | ≥ 30 | ≥ 30 |