Alloy 625 is an austenitic nickel-chromium-molybdenum-niobium alloy offering exceptional corrosion resistance combined with high strength from cryogenic temperatures to 1800°F (982°C). The alloy's strength comes from solid-solution hardening by molybdenum and niobium, eliminating the need for precipitation-hardening treatments.
Density: 0.305 lbs/in³ (8.44 g/cm³)
Specific Heat: 0.102 BTU/lb-°F (427 J/kg-°K)
Modulus of Elasticity: 30.1 x 10⁶ psi (207.5 GPa)
Thermal Conductivity: 75 BTU/hr/ft²/ft/°F (10.8 W/m-°K)
Melting Range: 2350-2460°F (1290-1350°C)
Electrical Resistivity: 50.8 Microhm-in at 70°C
Alloy 625 demonstrates outstanding corrosion resistance in severely corrosive environments due to its highly alloyed composition. The combination of nickel and chromium provides resistance to oxidizing solutions, while nickel and molybdenum supply resistance in non-oxidizing environments.