UNS N08811
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
800HT (UNS N08811) are dual-certifiable Nickel-Iron-Chromium materials that resist oxidation, carburization and other high temperature corrosion. The chemical composition of the alloys are identical to Alloy 800 (UNS N08800), with the exception of the higher level of carbon present in both grades (0.05 – 0.10%) in alloy 800H, and (0.06 – 0.10%) in alloy 800HT. Alloy 800HT also has an addition of up 1.0 % aluminum and titanium. Application : Chemical and Petrochemical Processing - process equipment for the production of ethylene, ethylene dichloride, acetic anhydride, ketene, nitric acid and oxy-alcohol, power generation, thermal processing fixtures.
Physical properties of UNS N08811
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.94 g/cm³ | 0.287 lb/in³ |
| Melting point | 1357-1385 °C | 2475-2525 °F |
Mechanical properties of UNS N08811
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength (annealed) | 560 MPa | 81200 psi |
| Yield strength (annealed) | 250 MPa | 36300 psi |
| Elongation at break (annealed prior to test) | 45% | 45% |
Thermal properties of UNS N08811
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@ 20-100°C/68-212°F) | 14.4 µm/m°C | 8.00 µin/in°F |
| Thermal conductivity | 11.5 W/mK | 79.8 BTU in/hr. ft².°F |
UNS N08811 alloy has the following characteristics:
1. Excellent corrosion resistance in aqueous media at extremely high temperatures up to 500℃
2. Very good resistance to stress corrosion
3. Very good machinability
Metallographic structure:
Face-centered cubic lattice structure. The extremely low carbon content and the increased Ti:C ratio increase the stability of the structure and the maximum resistance to sensitization and intergranular corrosion. Low-temperature annealing at around 950℃ ensures a fine grain structure.
Corrosion resistance:
It can resist corrosion from many corrosive media. Its high nickel content gives it good resistance to stress corrosion cracking under aqueous corrosion conditions. The high chromium content gives it better resistance to pitting and crevice corrosion cracking. The alloy has good resistance to nitric acid and organic acid corrosion, but limited corrosion resistance in sulfuric acid and hydrochloric acid. In addition to the possibility of pitting corrosion in halides, it has good corrosion resistance in oxidizing and non-oxidizing salts. It also has good corrosion resistance in water, steam, and mixtures of steam, air, and carbon dioxide.
Package&Delivery
Hot Tags: uns n08811, China uns n08811 suppliers, alloy 693, Alloy B 3, Zirconium Alloy 705, 2 4856, 1 4876 material, duplex ss pipe
Previous
UNS N08825Next
UNS N08810You Might Also Like
Send Inquiry