Incoloy 825 austenitic nickel ferrochrome alloy
The alloy is a kind of general engineering alloy, which has high nickel composition of acid resistance and alkali metal corrosion resistance in oxidation and reduction environment. corrosion resistance is good in various media, such as sulfuric acid, phosphoric acid, nitric acid and organic acids, alkali metals such as sodium hydroxide, potassium hydroxide and hydrochloric acid solutions. Applied to various industrial fields with temperatures not exceeding 550℃, such as: heating pipes, containers, baskets and chains used in sulphuric acid pickling plants, seawater cooling heat exchangers, marine product piping systems, acid gas environmental pipelines, heat exchangers in phosphoric acid production, evaporators, washing, impregnation tubes, air heat exchangers in petroleum refining, food engineering, chemical processes, flame retardant alloys for high pressure oxygen applications, etc.
Inconel 825 common number corresponding
|
Category |
General name |
Number of German marks |
Unified Digital Number Number Number |
Cast plate |
|
Ni-Cr-Fe |
Incoloy 825NiCr21Mo |
2.4858 |
N08825 |
CU5MCuC |
Inconel 825 other brands corresponding
|
Name |
GB of China |
ASTM of the United States |
DIN Germany |
British BS |
AFNOR France |
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|
New brand |
Old brand |
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|
Incoloy 825 |
NS1402 |
NS142 |
UNS N08825 |
W.Nr.2.4858(NiCr21Mo) |
NA16 |
NC21FeDu |
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Inconel 825 physical properties |
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|
Density |
Melting point |
Thermal conductivity |
Specific heat capacity |
Elastic modulus |
Shear modulus |
resistivity |
Poisson's ratio |
Line expansion coefficient |
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|
g/cm3 |
℃ |
λ/(W/m•℃) |
J/kg•℃ |
GPa |
GPa |
μΩ•m |
a/10-6℃-1 |
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|
8.25 |
1395 |
14.7(100℃) |
430 |
214 |
... |
1.22 |
... |
13.1(20~100℃) |
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|
1425 |
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Inconel 825 chemical composition
|
Licence |
UNS No. |
Chemical element% |
C |
Mn |
Si |
P |
S |
Cu |
Mo |
Ni |
Cr |
Ksi[Mpa] of minimum tensile strength |
Minimum yield strength Ksi[Mpa] |
Minimum elongation,% gauge 2 inches |
|
CU5MuC |
N08826 |
Max |
0.050 |
1.0 |
1.0 |
0.03 |
0.03 |
1.50-3.5 |
2.5-3.5 |
38.0-44.0 |
19.5-23.5 |
75[520] |
35[240] |
20 |
Inconel 825 corrosion properties
|
Medium |
|
Inconel825 the nickel content in the alloy is much higher than that of stainless steel, the corrosion resistance of alkali sulfide is better than that of stainless steel, and the corrosion resistance of high temperature is better. The corrosion resistance of Ni-Fe alloy is better than that of Ni in oxidizing environment. Because of the high nickel content, it also has good corrosion resistance in reducing environment. |