| Form |
ASTM |
| Rod and bar |
B 446 |
| Plate, sheet and strip |
B 443, B 906 |
| Seamless pipe and tube |
B 444, B 829 |
| Welded pipe |
B 705, B 775 |
| Welded tube |
B 704, B 751 |
| Welding fitting |
B 366 |
| Billet and bar for reforging |
B 472 |
| Forging |
B 564 |
Chemical composition
| % |
Ni |
Cr |
Mo |
Fe |
C |
Mn |
Si |
P |
S |
Co |
Nb+Ta |
Al |
Ti |
| min |
58.0 |
20.0 |
8.0 |
|
|
|
|
|
|
|
3.15 |
|
|
| max |
|
23.0 |
10.0 |
5.0 |
0.10 |
0.50 |
0.50 |
0.015 |
0.015 |
1.00 |
4.15 |
0.40 |
0.40 |
Physical properties
| Density |
8.44 g/cm3 |
| Melting range |
1290-1350℃ |
Features: Inconel 625 has excellent strength at temperatures up to 816℃. At higher temperatures, its strength is generally lower than that of other solid solution strengthened alloys. Inconel 625 has good oxidation resistance at temperatures up to 980℃ and shows good resistance to aqueous corrosion, but is relatively moderate compared to other more capable corrosion resistant alloys.
Applications: Chemical process industry and sea water application. Inconel 625 is used in short term applications at temperatures up to 816℃. For long term service, it is best restricted to a maximum of 593℃, because long term exposure above 593℃ will result in significant embrittlement.
Note: Inconel is a registered trademark of the Special Metals Corporation group of companies.
