Physical Properties of Nickel Alloy 20 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 in. (min.) % |
Grain Size Req. |
Max. Hardness |
Modulus of Elasticity (x106 psi) |
Mean Coefficient of Thermal Expansion IN./ IN./ °F x 10-6) |
Thermal Conductivity (BTU-in/ ft2-h-°F) |
| 20 |
N08020 |
B464
B468 |
80,000 |
(551) |
80 |
35,000 |
(241) |
35 |
30 |
— |
— |
28 |
8.3 |
148 |
Composition of Nickel Alloy 20 tubing and pipe
| Grade |
20 |
| UNS Designation |
N08020 |
| Nickel (Ni) |
32.00 – 38.00 |
| Chromium (Cr) |
19.00 – 21.00 |
| Iron (Fe) |
Bal. |
| Molybdenum (Mo) |
2.00 – 3.00 |
| Titanium (Ti) Max. |
— |
| Aluminum (Al) Max. |
— |
| Cobalt (Co) Max. |
— |
| Tungsten (W) |
— |
| Vanadium (V) Max. |
— |
| Copper (Cu) Max. |
3.00 – 4.00 |
| Manganese (Mn) Max. |
2.00 |
| Niobium (Nb) plus Tantalum |
8xC–1.00 |
| Carbon (C) Max. |
0.07 |
| Nitrogen (N) Max. |
— |
| Silicon (Si) Max. |
1.00 |
| Sulphur (S) Max. |
0.035 |
| Phosphorous (P) Max. |
0.045 |
| Other Elements |
— |
Nickel Alloy 20 Product Range
| Alloy |
UNS Designation |
Werkstoff NR. |
Specifications* |
| 20 |
N08020 |
2.4660 |
B/SB468, B/SB464 |
*Note: The specifications noted including ASTM, ASME, or other applicable authorities are correct at the time of publication. Other specifications may apply for use of these materials in different applications.
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