Alloy 904L/UNS N08904
Alloy 904L/UNS N08904
Product Description
Alloy 904L•UNSN0904•WNR 1.4539
904L is an austenitic stainless steel. In comparison to 316L, its molybdenum addition gives it superior resistance to localized attack (pitting and crevice corrosion) by chlorides and greater resistance reducing acids and in particular its copper addition gives it useful corrosion resistance to all concentrations of sulphuric acid. Its high alloying content also gives it greater resistance to chloride stress corrosion cracking, but it is still susceptible. Its low carbon content makes it resistant to sensitization by welding and which prevents intergranular corrosion.
Alloy 904L Chemical Composition
|
% |
Ni |
Cr |
Fe |
Mn |
C |
Cu |
Si |
S |
P |
N |
Mo |
|
Min |
23.0 |
19.0 |
balance |
|
|
1.0 |
|
|
|
|
4.0 |
|
Max |
28.0 |
23.0 |
2.0 |
0.020 |
2.0 |
1.0 |
0.03 |
0.04 |
0.1 |
5.0 |
UNS N08904 Physical Constants:
|
Density |
7.95 Mg/m³ |
|
Melting Range |
1300-1390 ℃ |
Alloy 904L typical application:
- Heat exchangers
- Condenser tubes
- Pulp and paper processing industries
- Oil refinery components
- Gas scrubbing plants https://www.hengyangpiping.com/
