Alloy 625, often referred to as Inconel 625 (where Inconel is a trademark of Special Metals Corp) is a nickel-chromium-molybdenum-niobium alloy (NiCr22Mo9Nb), supplied in the hot worked and annealed condition. Perfectly suited to the most demanding applications, it achieves high-strength levels from the solid solution effects of Molybdenum and Niobium (Colombium) from room temperature up to 800°C.
It is particularly useful in situations where oxidation resistance and avoidance of pitting is required. In the annealed condition, it is fully austenitic and is suitable for machining. It provides excellent corrosion resistance in a wide variety of severe corrosive environments due to its high alloy content.
|Bars up to and including 4” diameter or section||Bars above 4” diameter or section|
|0.2% Proof Stress||415 N/mm2||60ksi||345 N/mm2||50ksi|
|Tensile Strength||830 N/mm2||120ksi||760 N/mm2||110ksi|
|Elongation, 5.65√S0 and 4D||30%||25%|
|Reduction of Area||35%||35%|
|Magnetic Permeability (20°C)||<1.001|
|Curie Temperature (°C)||-196|
|Young’s Modulus (N/mm2)||207.5|
|Specific Heat, 20°C (J/(g.K))||410|
|Specific Electrical Resistance, 20°C (Ω-m)||0.0129|
|Thermal conductivity, 20°C (W/(m.K))||9.9|
|Mean coefficient of thermal expansion, 20-100°C (/K)||12.8 x 10-6|