Incoloy 825 (US UNS n08825 / German w.nr.2.4858)
Chemical composition of Incoloy 825:
alloy | % | nickel | chromium | iron | carbon | manganese | silicon | copper | molybdenum | aluminum | titanium | phosphorus | sulfur |
825 | minimum | 38 | 19.5 | allowance | 1.5 | 2.5 | 0.6 | ||||||
maximum | 46 | 23.5 | 0.05 | 1 | 0.5 | 3 | 3.5 | 0.2 | 1.2 | 0.02 | 0.03 |
Physical properties of Incoloy 825:
density | 8.1 g/cm3 |
melting point | 1370-1400 ℃ |
In the solid solution state of Incoloy 825, the mechanical properties of the alloy at room temperature:
Alloy and state | tensile strengthσb (Mpa) | yield strengthσ0.2 (Mpa) | ElongationA5 % | hardness Hv |
825 | ≥550 | ≥220 | ≥30 | ≤200 |
This alloy has the following properties:
825 alloy is a kind of general engineering alloy. It has good oxidation resistance and non oxidation hot acid properties. It has good mechanical properties at room temperature and high temperature up to 550 ℃. The high nickel content in the oxidation and reduction environment can effectively resist stress corrosion cracking. It has good corrosion resistance in various media, such as sulfuric acid, phosphoric acid, nitric acid and organic acid, alkali metals such as sodium hydroxide, potassium hydroxide and hydrochloric acid solution. The high comprehensive properties of 825 alloy are shown in the Nuclear Combustion dissolver with various corrosion media, such as sulfuric acid, nitric acid and sodium hydroxide all treated in the same equipment
Metallographic structure of Incoloy 825:
825 is a face centered cubic lattice structure
The application fields of Incoloy 825 include:
1. Heating pipes, containers, baskets and chains for sulfuric acid pickling plant
2. Sea water cooling heat exchanger, marine product pipeline system, acid gas environment pipeline
3. Heat exchanger, evaporator, washing and impregnating pipe in phosphoric acid production
4. Air heat exchanger in oil refining
5. Roller shaft of heat treatment furnace
6. Chemical process
7. Flame retardant alloy for high pressure oxygen application
Products of our company:
Cold and hot plate, strip, tube, wire, forging bar, hot rolling bar, machined products
Related products