VDM® Alloy 718 is an age hardenable nickel-chrome-iron-molybdenum alloy. The age hardening is achieved by specific
additions of niobium, titanium and aluminum. It can be delivered in solution-annealed or hardened condition. VDM® Alloy
718 is characterized by:
Good processing properties in the solution-annealed condition
Good mechanical short and long-term properties, and great fatigue strength in the age hardened condition
Good creep resistance up to 700 °C (1,300 °F)
Good oxidation resistance up to approx. 1,000°C (1,830 °F)
Excellent mechanical properties in low temperatures
Corrosion
resistance
Based on the high chrome and molybdenum concentrations, VDM® Alloy 718 has a good resistance in many media against
abrasive and local corrosion such as pitting. By virtue of its high nickel content, VDM® Alloy 718 also has good resistance
against stress corrosion cracking.
Applications
Based on its high-temperature resistance up to 700 °C (1,300 °F), its excellent oxidation and corrosion resistance, and its
good workability, VDM® Alloy 718 is used in many demanding applications. Originally, it was developed and used for static
and rotating components in aircraft turbines such as housings, mounting elements and turbine disks, where tough requirements apply for creep resistance and fatigue behavior, in particular for the rotating applications.
Due to its properties, its good workability and efficiency, the material is additionally widely used for static and rotating