PCC Energy Group

Nickel Alloy 686

Pipe & Tubing

Product Information

Composition of Nickel Alloy 686 Pipe and Tubing
UNS DesignationN06686
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
Physical Properties of Nickel Alloy 686 in the Annealed Condition at -20°F to +100°F
      Tensile StrengthYield Strength            
AlloyUNS DesignationSpec.psiMPaksipsiMPaksiElongation in 2 in. (min.) %Grain Size Req.Max. HardnessModulus 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

Nickel Alloy 686 Product Range

AlloyUNS DesignationWerkstoff 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.