Audited Supplier
OD: 1/2"--18", WT: 10S--XXS
Round
ASTM
Nickel Alloy
Cold Rolled
Flat
Annealing & Pickling
Oil and Gas Pipeline
Oil and Gas Applications
N08825;825;2.4858
6-400
1-65
1-18m
XTD
Knitting Strips, Plywood Case
OD: 1/2"--18", WT: 10S--XXS
China
75071200
Product Description
Material Summary
lncoloy 825 is an austenitic nickel-iron-chromium-molybdenum-copper alloy containing high levels of chromium, nickel, copper, and molybdenum to provide high levels of corrosion resistance to both moderately oxidizing and moderately reducing environments. This balance of alloying elements grants this alloy exceptional resistance to both chloride stress corrosion cracking, as well as crevice corrosion and general corrosion. It is the high level of nickel in combination with the amount of molybdenum and copper in this nickel alloy produces substantially improved corrosion resistance in a corrosive environment such as reducing environments compared to stainless steel. The addition of titanium in this alloy also helps to stabilize the alloy against intergranular corrosion. Chloride stress corrosion cracking is a type of localized intergranular corrosion on materials that are put under tensile strength, in high temperatures and in an environment that includes oxygen and chloride ions such as seawater.
As an austenitic, nickel alloy, the material is ductile over a wide range of temperatures from cryogenic to well more than 1000 °F (538 °C). Fabricability is typical for a nickel alloy, with the material readily formable and weldable by a variety of techniques.
Chemical Composition
| Grade | Ni | Cr | Fe | Mn | C | Cu | Si | S | Al | Ti | Mo |
| Alloy 825 | 38 - 46 | 19.5 - 23.5 | ≥22.00 | ≤1.0 | ≤0.05 | 1.50-3.00 | ≤0.5 | ≤0.03 | ≤0.2 | 0.06 -1.2 | 2.50 - 3.50 |
Mechanical Properties
| Grade | Condition | Tensile Strength ksi(MPa) | Yield Strength ksi(MPa) | Elongation(%) |
| N08825 | Annealed | ≥85(586) | ≥35(241) | ≥30 |
| N08825 | Hot finished annealed | ≥75(517) | ≥25(172) | ≥30 |
| N08825 | Cold-worked annealed | ≥85(586) | ≥35(241) | ≥30 |
| N08825 | Hot-forming quality | - | - | - |
APPLICATIONS
Alloy 825 is widely used in oil and gas applications. Other uses include chemical process equipment, exhaust systems, and power generation. CRA offers specialty alloy 825 seamless pipe & tube for use in multiple industries and applications, including:- Corrosive well conditions containing the presence of CO2 , H2S, and chlorides, in temperatures up to 300°F, without the presence of sulfur
- Tubing, Casing, & Liners
- Base Pipe for Sand Screens
- Swell Packers
- Exhaust Systems
- Chemical Processing
- Power Generation
- Geothermal
- Carbon Capture & Sequestration (CCS)
