PCC Energy Group


Super Austenitic Pipe and Tubing

Product Information

Composition of Super Austenitic N08811 Pipe and Tubing
UNS DesignationN08811
Nickel (Ni) 30.0– 35.0
Chromium (Cr) 19.0–23.0
Iron (Fe) 39.5 Min.
Molybdenum (Mo)
Titanium (Ti) Max. 0.15–0.60*
Aluminum (Al) Max. 0.15–0.60
Cobalt (Co) Max.
Tungsten (W)
Vanadium (V) Max.
Copper (Cu) Max. 0.75
Manganese (Mn) Max. 1.5
Niobium (Nb) plus Tantalum
Carbon (C) Max. 0.06–0.10
Nitrogen (N) Max.
Silicon (Si) Max. 100
Sulphur (S) Max. 0.1015
Phosphorous (P) Max.
Other Elements
Physical Properties of Super Austenitic N08811 Alloy 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)
800HT N08811 B514, B515 65,000 450 65 25,000 170 25 30 5 & coarser 7.9 80
Super Austenitic N08811 Product Range
UNS DesignationWerkstoff NR.Specifications*
N08811 1.4876 B/SB515, B/SB514
*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.