1.4958
| Material No. | 1.4958 |
|---|---|
| EN symbol (short) | X5NiCrAlTi31-20 |
| AISI/SAE | — |
| UNS | UNS N 08810 |
| AFNOR | — |
| BS | — |
| alloy | alloy 800H |
| Registered work's label | Nicrofer®3220 |
| Standards | SEW 310 |
Description
The elevated-temperature alloy 1.4958 (alloy 800H) is mainly used in high-temperature plants.
Our product range in 1.4958 (alloy 800H) are tubes and pipes, fittings and flanges, accessories.
Chemical composition ¹ | ||||||||
| C ≤ % | Si ≤ % | Mn ≤ % | P ≤ % | S ≤ % | Cr % | Mo | Ni ² ≤ % | V |
| 0,03-0,08 | 0,07 | 1,5 | 0,015 | 0,01 | 19,0-22,0 | 30-32,5 | ||
| Nb ≤ % | Ti ³ % | Al ³ % | Co ≤ % | Cu ≤ % | N | Fe | ||
| 0,1 | 0,2-0,5 | 0,2-0,5 | 0,50 ² | 0,50 | ||||
| ¹ in accordance with Key to Steel 2001 ² Ni+Co = 30-32,5% ³ Ti+Al <= 0,7% | ||||||||
Special characteristics | ||
| Temperature range | Density kg/dm³ | Hardness (HB) |
|---|---|---|
| 600°C - 950°C | 8,0 | |
| high-temperature resistant steel, very high creep strength: outstanding stability against carbonisation, oxidation and nitriding | ||
Welding filler |
| covered rod electrode 1.4958 or 2.4648 |
Main fields of application (depending on the specific conditions of use) |
| thermal treatment plants, branchpipes, jet pipes, muffles, cages, industrial furnaces, chemical industry, pressure bombs, building of steam boilers, petrochemical industry, coal gasification, waste incineration plants |
| (all aforementioned specifications serve as a general orientation and have to be reviewed depending on the specific conditions of use) |