The high nickel content gives the alloy effective stress corrosion cracking resistance.
Corrosion resistance is good in a variety of media, such as sulfuric, phosphoric, nitric and organic acids, alkali metals such as sodium hydroxide, potassium hydroxide and hydrochloric acid solutions.
The higher overall performance of Incoloy 825 is shown in a nuclear combustion dissolver with a variety of corrosive media, such as sulfuric acid, nitric acid and sodium hydroxide, all processed in the same equipment.
| Alloy |
% |
Ni |
Cr |
Mo |
Fe |
C |
Mn |
Si |
S |
Cu |
Al |
Ti |
P |
|
825 |
Min. |
38.0 |
19.5 |
2.5 | 22.0 | - | - | - | - | 1.5 |
0.6 |
- | |
|
Max. |
46.0 |
23.5 |
3.5 | - | 0.05 | 1.0 | 0.5 | 0.03 | 3.0 | 0.2 |
1.2 |
0.03 |
| Density | 8.14 g/cm³ |
| Melting point | 1370-1400 ℃ |
| Status |
Tensile strength Rm N/mm² |
Yield strength Rp 0. 2N/mm² |
Elongation As % |
Brinell hardness HB |
| Solution treatment | 550 | 220 | 30 | ≤200 |
| Bar/Rod | Wire | Strip/Coil | Sheet/Plate | Pipe/Tube | Forgings |
| ASTM B425/ASME SB425. ASTM B564/ASME SB564, ISO 9723/9724/9725. DIN17752/17753/17754 | ASTM B425/ASME SB425. ASTM B564/ASME SB564, ISO 9723/9724/9725. DIN17752/17753/17754 | ASTM B424/B409/B906/ASME SB424/SB409/SB906 | ASTM B163/ASME SB163, ASTM B407/B829/ASME SB407/SB829, ASTM B514/B775/ASMESB514/SB775, ASTM B515/B751 | ASTM B425/ASME SB425. ASTM B564/ASME SB564, ISO 9723/9724/9725. DIN17752/17753/17754/ASME SB366(Fittings) | |
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Supply in welding wire and spring wire in coil form and cut length.
Standards size and customized dimension can be produced by us with precision tolerance
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Standards size and customized dimension can be produced by us with small tolerance
Soft condition and hard condition with AB bright surface, width up to 1000mm
Forging Ring or gasket,size can be customized with bright surface and precision tolerance
825 alloy is a kind of general engineering alloy, which has the acid and alkali corrosion resistance in oxidation and reduction environment and effective resistance to stress corrosion cracking for its high nickel composition.In all sorts of media, corrosion resistance is very good such as sulfuric acid, phosphoric acid, nitric acid and organic acid, to alkali, such as sodium hvdroxide, potassium hvdroxide and hvdrochloric acid solution. The higher comprehensive performance of 825 alloy shows in nuclear burning dissolver of various corrosion medium, such as sulfuric acid, nitric acid and sodium hvdroxide are all handled in the same equipment.
• Good resistance to stress corosion cracking.
• Good resistance to pitting and crevice corrosion
• Good resistance to oxidization and non oxidizing acid.
• Good mechanical properties at room temperature or up to550℃
• A certification of manufacturing pressure vessel of 450 ℃
• Components such as heating coils, tanks, crates, baskets and chains in sulphuric acid pickling plants
• Sea-water-cooled heat exchangers, offshore product piping systems; tubes and components in sour gas service
• Heat exchangers, evaporators, scrubbers, dip pipes etc. in phosphoric acid production
• Air-cooled heat exchangers in petroleum refineries
• Food processing
• Chemical plant