ALLOY 800H/HT | UNS N08810/N08811
Description
Alloy 800H and 800HT are nickel-iron-chromium alloys with good strength and excellent resistance to oxidation and carburization in high-temperature exposure. These nickel steel alloys are identical except for the higher level of carbon in Alloy 800H, and the addition of up to 1.20% aluminum and titanium in Alloy 800HT.
Specifications Stocked
| Form Name | Size Range | Schedules | Specifications |
|---|---|---|---|
| Seamless Pipe | 1/2″ – 8″ | 40S, 80S, 160 | ASTM B407 / ASME SB407 |
| Buttweld Fittings | 1/2″ – 8″ | 40S, 80S, 160 | ASTM B366 / ASME SB366 |
| Flanges | 1/2″ – 8″ | 150#, 300# | ASTM B564 / ASME SB564 |
Limiting Chemical Composition %
|
C |
Cr |
Fe |
Ni |
Al |
Ti |
Al/Ti |
|---|---|---|---|---|---|---|
|
0.06 – 0.10 |
19.0 – 23.0 |
MIN |
30.0 – 35.0 |
0.15 – 0.60 |
0.15 – 0.60 |
0.85 – 1.20 |
Typical Industrial Applications
- Ethylene furnace quench boilers
- Industrial furnaces
- Heat-treating equipment
- Chemical and petrochemical processing
- Super-heater and re-heaters in power plants
- Pressure vessels
- Heat exchangers
Tensile Requirements
|
Tensile Strength |
Yield Strength |
|---|---|
|
72.5 |
25 |
NOTE: The information and data in this product data sheet have been compiled from a variety of sources, and should be considered as a general guide only. The information and data included are accurate to the best of our knowledge, and may be revised at any time without notice. Energy Metals Inc. assumes no responsibility for the accuracy of this information.