825 NICKEL BAR
825 NICKEL BAR
825 NICKEL BAR, ROD, & WIRE
Nickel Alloy 825 bar, rod, and wire is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. The alloys chemical composition is designed to provide exceptional resistance to many corrosive environments. The nickel content is sufficient for resistance to chloride-ion stress-corrosion cracking. The nickel, in conjunction with the molybdenum and copper, also provides outstanding resistance to reducing environments, such as those containing sulfuric and phosphoric acids. The molybdenum also aids resistance to pitting and crevice corrosion. And the titanium addition serves to stabilize the alloy – following appropriate heat treatment – against sensitization to inter-granular corrosion.
Bar:
- ½” up to 4”
Specifications:
- UNS: NO8825
- W. Nr.: 2.4858
- ASME: SB424
- ASTM: B 424
Chemical Composition, %:
|
C |
Si |
Mn |
S |
Ni |
Cu |
Fe |
Cr |
Mo |
Ti |
Al |
|
| MIN |
– |
– |
– |
– |
38.0 |
1.5 |
22.0 |
19.5 |
2.5 |
0.6 |
– |
| MAX |
0.05 |
0.5 |
1.0 |
0.03 |
46.0 |
3.0 |
– |
23.5 |
3.5 |
1.2 |
0.2 |
Features:
- Exceptional resistance to corrosive environments
- Resistance to pitting and crevice corrosion
- Good weldability by all conventional processes
- Resistance to general corrosion, pitting, crevice corrosion, inter-granular corrosion, and stress-corrosion cracking
Applications:
- Chemical processing
- Oil and gas recovery
- Pickling Operations
- Handling of radioactive wastes
- Seawater Heat
- Ore processing
- Pollution control
- Acid production
- Nuclear fuel reprocessing
- Petroleum refining
- Exchangers
- Heating Coils
Corrosion Resistance:
With its high content of chromium, molybdenum, and copper, Nickel Alloy 825 provides excellent general (overall) corrosion resistance against oxidizing and non-oxidizing acids. Its corrosion resistance to sulfuric acid is outstanding.
