Incoloy 800 is widely used in equipment that must have high strength and resistance to oxidation, carburisation and other harmful effects of high temperature exposure. For service
requiring optimum creep and rupture properties, Incoloy 800H or 800 HT are used. The high contents of nickel and chromium in the alloys also give good corrosion resistance.
Specifications
| Alloy 800HT – UNS N08811 | |
| Products | Norm ASTM |
| Seamless Tubes | B-407 |
| Welded Tubes | B-514 |
| Plates | B-409 |
| Bars | B-408 |
| Flanges | B-564 |
| Fittings | B-366 |
Chemical specifications %
| Alloy 800HT – UNS N08811 | ||
| Element | Simbol | Maximum |
| Manganese | Mn | 1,5 |
| Sulfur | S | 0,015 |
| Silicon | Si | 1,00 |
| Nickel | Ni | 30,0-35,0 |
| Chrome | Cr | 19,0-23,0 |
| Copper | Cu | 0,75 |
| Aluminium | Al | 0,15-0,60 |
| Titanium | Ti | 0,15-0,60 |
| Aluminium+Titanium | Al+Ti | 0,85-1,20 |
| Iron | Fe | Balance |
Mechanical Properties
| Alloy 800HT – UNS N08811 | ||||||||
| Norm | Rm min. | Rp 0,2% min. | E4d min.% | Z min.% | T.I.(J) | HR B | HB | |
| B-407 (*) | 65 (450) | 25 (170) | 30 | |||||
| B-408 (*) | 65 (450) | 25 (170) | 30 | |||||
| B-409 | a | 65 (450) | 25 (170) | 30 | ||||
| b | 65 (450) | 25 (170) | 30 | |||||
| c | 65 (450) | 25 (170) | 30 | |||||
| B-514 | 65 (450) | 25 (170) | 30 | |||||
| B-564 | 65 (448) | 25 (172) | 30 | |||||
(*) Condition: Hot-finished annealed or cold-worked annealed
a = Hot-rolled plate
b = Hot-rolled sheet
c = Cold-rolled sheet
