Physical Properties of Super Austenitic 825 Alloys in the Annealed Condition at -20°F to +100°F
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Tensile Strength |
Yield Strength |
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Alloy |
UNS Designation |
Spec. |
psi |
MPa |
ksi |
psi |
MPa |
ksi |
Elongation in 2 inches (min.) % |
Grain Size Req. |
Max. Hardness |
Modulus of Elasticity (x106psi) |
Mean Coefficient of Thermal Expansion (IN./IN./°F x 10-6) |
Thermal Conductivity (BTU-in/ft2-h-°F) |
825 |
N08825 |
B704, B705 |
85,000 |
586 |
85 |
35,000 |
240 |
35 |
30 |
— |
— |
28.0 |
7.7 |
77 |
Composition of Super Austenitic 825 tubing and pipe
Grade |
825 |
UNS Designation |
N08825 |
Nickel (Ni) |
38.0–46.0 |
Chromium (Cr) |
19.5–23.5 |
Iron (Fe) |
22.0 Min. |
Molybdenum (Mo) |
2.5–3.5 |
Titanium (Ti) Max. |
0.6–1.2 |
Aluminum (Al) Max. |
0.2 |
Cobalt (Co) Max. |
— |
Tungsten (W) |
— |
Vanadium (V) Max. |
— |
Copper (Cu) Max. |
1.5–3.0 |
Manganese (Mn) Max. |
1.0 |
Niobium (Nb) plus Tantalum |
— |
Carbon (C) Max. |
0.05 |
Nitrogen (N) Max. |
— |
Silicon (Si) Max. |
0.5 |
Sulphur (S) Max. |
0.03 |
Phosphorous (P) Max. |
— |
Other Elements |
— |
Super Austenitic 825 Product Range
Alloy |
UNS Designation |
Werkstoff NR. |
Specifications* |
825 |
N08825 |
2.4858 |
B/SB704, B/SB705 |
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Product Image
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