PCC Energy Group


Super Ferritic Pipe and Tubing

Product Information

Composition of 439 Pipe and Tubing
UNS DesignationS43035
Nickel (Ni) 0.50
Chromium (Cr) 17.0–19.0
Iron (Fe) Bal.
Molybdenum (Mo)
Titanium (Ti) Max. 0.20 + 4x (C + N) Min. to 1.10 Max.
Aluminum (Al) Max. 0.15
Cobalt (Co) Max.
Tungsten (W)
Vanadium (V) Max.
Copper (Cu) Max.
Manganese (Mn) Max. 1.00
Niobium (Nb) plus Tantalum
Carbon (C) Max. 0.07
Nitrogen (N) Max. 0.04
Silicon (Si) Max. 1.00
Sulphur (S) Max. 0.030
Phosphorous (P) Max. 0.040
Other Elements
Physical Properties of 439 Alloys 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)
439 S43035 A268 60,000 415 60 30,000 205 30 20 90 Rb 29.0 5.6 168
439 Product Range
AlloyUNS DesignationWerkstoff NR.Specifications*
439 S43035 N/A A/SA268
*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.