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Nickel alloy tubes

Alloy 825 • UNS N08825 • WNR 2.4858


Alloy 825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. It was developed to provide exceptional corrosion resistance in both oxidizing and reducing environments. The alloy is resistant to chloride stress-corrosion cracking and pitting. The addition of titanium stabilizes Alloy 825 against sensitization in the as-welded condition making the alloy resistant to intergranular attack after exposure to temperatures in a range that would sensitize unstabilized stainless steels. The fabrication of Alloy 825 is typical of nickel-base alloys, with material being readily formable and weldable by a variety of techniques Available tube product forms Straight Coiled Seamless Seam welded and cold redrawn Seam welded, cold redrawn and annealed Typical Applications C ondensers Oil and gas well equipment Hydraulic systems Chemical injection lines Chemical process equipment and vessels Downhole control lines Control and...

Product features

Tensile Rm 590 MPa (min)
R.p. 0.2% Yield 35 ksi (min)
R.p. 0.2% Yield 240 MPa (min)
Elongation (2" or 4D gl) 30 % (min)
Thermal Conductivity 11.1 W.m -1.°K-1
Thermal Expansion 14 mm/m/°C
Modulus Elasticity 196 GPa
Electrical Resistivity 1.13 μohm/cm
Density 8.13 g/cm3

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