Alloy 22 (UNS N06022) is an all austenitic nickel chromium molybdenum tungsten alloy, which has better overall corrosion resistance than other nickel alloys (like alloy C-276, alloy C4 and alloy 625), especially in high chlorine environment.
Alloy 22 has excellent resistance to various chemical process environments, including ferric chloride, chlorine, heat contaminated solutions, acetic acid, seawater and brine solutions. Alloy 22 is ideal when considering the use of alloys in extremely corrosive environments.
Chemical composition:
|
% |
Ni |
Cr |
Mo |
Fe |
W |
Co |
C |
Mn |
Si |
P |
S |
V |
|
min |
balance |
20.0 |
12.5 |
2.0 |
2.5 |
|||||||
|
max |
22.5 |
14.5 |
6.0 |
3.5 |
2.5 |
0.015 |
0.50 |
0.08 |
0.020 |
0.020 |
0.35 |
Physical properties :
|
Density |
8.69 g/cm3 |
|
Melting range |
1325-1370℃ |
Application:
Oil and gas
pharmacy
Pulp and paper
Pollution control and nuclear industry
Refuse incinerator
Flue gas desulfurization scrubber equipment
Nuclear fuel reprocessing / spent fuel container
Heat exchanger assembly
Chemical equipment
From
|
UNS |
Alloy |
Scope (mm) |
|||
|
Seamless pipe &tube |
Welded pipe & tube |
Fitting/Flange |
Sheet, Plate, Strip |
||
|
UNS N06022 |
ALLOY C22 |
OD: 6.35-114.3mm WT: 1.65-11.13mm L: 0-12000mm |
OD: 17.1-914.4mm WT: 1-36mm L: <12000mm |
DN15-DN600 | Plate: WT<6mm, WDT<1200mm, L<3000mm;
WT>6mm, WDT<2800mm, L<8000mm |
