Products Description
Incoloy 825 Alloy is an all-purpose project alloy, have good corrosion resistance of the acid and alkali metal property in both oxidation and reduction environments. High nickel content made it with effective stress corrosion cracking resistance performance. Incoloy 825 have excellent corrosion resistance in different kinds of media, such as sulfuric acid, phosphoric acid, nitric acid and organic acid, alkali metal such as sodium hydroxide, potassium hydroxide, and hydrochloric acid. A variety of media corrosion of nuclear-burning dissolver show Incoloy 825 high integrated prpperty, like sulfuric acid, nitric acid and potassium hydroxide are all dealing in a same device.
Item | 800 | 800H | 800HT | 825 | 925 |
C | ≤0.1 | 0.05-0.1 | 0.06-0.1 | ≤0.05 | ≤0.03 |
Mn | ≤1.5 | ≤1.5 | ≤1.5 | ≤1 | ≤1 |
Fe | rest | rest | rest | rest | rest |
P | -- | -- | -- | ≤0.02 | ≤0.03 |
S | ≤0.015 | ≤0.015 | ≤0.015 | ≤0.03 | ≤0.03 |
Si | ≤1 | ≤1 | ≤1 | ≤0.5 | ≤0.5 |
Cu | ≤0.75 | ≤0.75 | ≤0.75 | 1.5-3 | 1.5-3 |
Ni | 30-35 | 30-35 | 30-35 | 38-46 | 42-46 |
Al | 0.15-0.6 | 0.15-0.6 | 0.15-0.6 | 0.2-1 | 0.15-0.5 |
Ti | 0.15-0.6 | 0.15-0.6 | 0.15-0.6 | 0.6-1.2 | 1.9-2.4 |
Cr | 19-23 | 19-23 | 19-23 | 19.5-23.5 | 19.5-23.5 |
Mo | -- | -- | -- | 2.5-3.5 | 2.5-3.5 |
Features
1. Good stress corrosion cracking resistance performance
2. Good resistance for pitting and crevice corrosion performance
3. Good anti-oxidation and non-oxidzing heat acid performance
4. Good mechanical performance in both room temperature and up to 550°C
5. Have the pressure vessel authenticate when manufacture temperature up to 450°C
Applications
Incoloy 825 Alloy widely use in many kinds of industry field that the working temperature no more than 550°C:
1. Sulfuric acid factory usage for heating pipe, container, basket, chain and so on
2. Cooling heat exchanger, marine product pipeline system and gas pipeline of acidic environment
3. Heat exchanger, steam machine, washing, impregnation pipe, etc. for phosphoric acid produce
4. Oil refining in the air heat exchanger
5. Food project
6. Chemical process
7. Application of high pressure oxygen flam-retardant alloy
Chemical Properties of Incoloy 825 Alloy
Chemical Composition (%) | |||||||||
C | Si | Mn | S | Mo | Ti | Cr | Ni | Fe | Cu |
≤0.05 | ≤0.50 | ≤1.00 | ≤0.03 | ≤2.5~3.5 | ≤0.6~1.2 | 19.5~23.5 | 38.0~46.0 | ≥22.0 | 1.5~3.0 |
Standard | |||
Sheet / Plate | Round bar / Wire | Pipe | Tube |
ASME SB-424 | ASME SB-425 | ASME SB-423 | ASME SB-704 |
Mechanical Properties | ||||
Status | Tensile Strength (Rm N/mm2) | Yield strength (RP0.2N/mm2) | Elongation (A5%) | HB |
Solution treatment | 550 | 220 | 30 | ≤200 |
Incoloy 825 (NS142) similiaer trademark | |||
UNS | Trademark | JIS | W.Nr |
N08825 | Incoloy825 | NCF825 | 2.4858 |
ASM specifications for incoloy alloy 825
Specification | Title |
B163 | Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes |
B423 | Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825 and N08221)* Seamless Pipe and Tube |
B424 | Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825 and UNS N08221)* Plate, Sheet, and Strip |
B425 | Ni-Fe-Cr-Mo-Cu Alloy (UNS N08825) |
B704 | Welded UNS N06625 and UNS N08825 Alloy Tubes |
B705 | Nickel-Alloy (UNS N06625 and N08825) Welded Pipe |
B751 | General Requirements for Nickel and Nickel Alloy Welded Tube |
For more details, pls directly contact us.
E-mail: Info@hulkalloy.com
Mobile: 0086 13852926463
Tel: 0086 13852926463
Whatapps: 0086 13852926463
Add: Renli Village, Fangxian Town, Danyang City, Jiangsu Province, China