Inconel 625

Inconel 625 is a Nickel-Chromium-Molybdenum-Columbium (Niobium) alloy with excellent oxidation and corrosion resistance, with strength at high temperatures. Inconel has high strength properties as it contains molybdenum and columbium on the nickel-chromium matrix.

Technical Specification Inconel 625
Nominal Composition

Ni:58.0 min
Cr:20.0 - 23.0

Mo: 8.0 - 10.0

Cb (Nb): 3.15 - 4.15

Density

0.305 lb./in3, (8.44 g/cm3)

Modulus of Elasticity (E)

At 70°F (20°C):30.1 x 103 ksi

Modulus of Rigidity (G)

At 70°F(20°C): 11.8 x103 ksi

Coefficient of Expansion

7.4 µin/in.-°F (70°F to 600°F)

13.3 µm/m-°C (20°C to 300°C)

Electrical Resistivity

50.8 µΩ.in, (129 µΩ.cm)

Thermal Conductivity

68 Btu-in/ft2hr-°F, (12.0 W/m-K)

Min Size

0.0025 in (0.064 mm)

Max Temp

370oC (700oF)

Uses

Inconel 625 is resistant to chloride-ion stress-corrosion cracking and pitting making it suitable for springs operated in seawater applications.