Physical Properties of Nickel Alloy 686 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) |
| 686 |
N06686 |
B619, B626 |
100,000 |
690 |
100 |
45,000 |
310 |
45 |
45 |
— |
— |
30.0 |
6.7 |
118 |
Composition of Nickel Alloy 686 tubing and pipe
| Grade |
686 |
| UNS Designation |
N06686 |
| Nickel (Ni) |
Bal. |
| Chromium (Cr) |
19.0–23.0 |
| Iron (Fe) |
5.0 Max. |
| Molybdenum (Mo) |
15.0–17.0 |
| Titanium (Ti) Max. |
0.02–0.25 |
| Aluminum (Al) Max. |
— |
| Cobalt (Co) Max. |
— |
| Tungsten (W) |
3.0–4.40 |
| Vanadium (V) Max. |
— |
| Copper (Cu) Max. |
— |
| Manganese (Mn) Max. |
0.75 |
| Niobium (Nb) plus Tantalum |
— |
| Carbon (C) Max. |
0.10 |
| Nitrogen (N) Max. |
— |
| Silicon (Si) Max. |
0.08 |
| Sulphur (S) Max. |
0.02 |
| Phosphorous (P) Max. |
0.04 |
| Other Elements |
— |
Nickel Alloy 686 Product Range
| Alloy |
UNS Designation |
Werkstoff NR. |
Specifications* |
| 686 |
N06686 |
2.4606 |
B/SB626, B/SB619 |
*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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