Alloy 625 is a nickel-chromium alloy used for its high strength, excellent fabricability and outstanding corrosion resistance. Service temperatures can range from cryogenic to 980°C (1800°F). Alloy 625 strength is derived from the solid solution strengthening effect of molybdenium and niobium on its nickel-chromium matrix. Thus precipitation-hardening treatments are not required. This combination of elements also is responsible for superior resistance to a wide range of corrosive environments of unusual severity as well as to high-temperature effects such as oxidation and carburization. Available tube product forms Straight Coiled Seamless Seam welded, cold redrawn and annealed Typical Applications Wellhead components Sheathing Downhole equipment for corrosive/ sour service Reactor core Control rod components Gas pipeline control lines Heat exchangers Oil refining Chemical processing Control and instrumentation tubes Typical manufacturing specifications ASTM B444 AMS 5581 BS...

Product features

Tensile Rm 827 MPa (min)
R.p. 0.2% Yield 60 ksi (min)
R.p. 0.2% Yield 414 MPa (min)
Elongation (2" or 4D gl) 30 % (min)
Thermal Conductivity 14.8 W.m -1.°K-1
Thermal Expansion 12.4 mm/m/°C
Modulus Elasticity 207 GPa
Electrical Resistivity 10.3 μohm/cm
Density 8.42 g/cm3

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