PCC Energy Group

6-Moly 254

Super Austenitic Pipe and Tubing

Product Information

Composition of 254 Pipe and Tubing
UNS DesignationS32154
Nickel (Ni) 17.5–18.5
Chromium (Cr) 19.5–20.5
Iron (Fe) Bal.
Molybdenum (Mo) 6.0–6.5
Titanium (Ti) Max.
Aluminum (Al) Max.
Cobalt (Co) Max.
Tungsten (W)
Vanadium (V) Max.
Copper (Cu) Max. 0.50–1.00
Manganese (Mn) Max. 1.00
Niobium (Nb) plus Tantalum
Carbon (C) Max. 0.020
Nitrogen (N) Max. 0.18–0.25
Silicon (Si) Max. 0.80
Sulphur (S) Max. 0.010
Phosphorous (P) Max. 0.030
Other Elements
Physical Properties of 254 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)
254 S31254 A249, A312 98,000 675 98 45,000 310 45 40 96 Rb 28.0 8.5 90
254 Product Range
AlloyUNS DesignationWerkstoff NR.Specifications*
254 S31254 1.4547 A/SA249, A269, A270, A/SA312
*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.