Rod nickel alloy VDM® 188

sheetplatefor the aerospace industry

VDM® Alloy 188 is a high-temperature, heat resistant, cobalt-base alloy with equal contents of nickel and chromium, a high tungsten content and a controlled lanthanum addition. VDM® Alloy 188 is characterized by:  Excellent mechanical properties up to 1,150 °C (2,100 °F)  Good resistance to scaling and oxidation up to 1,150 °C (2,100 °F)  Good formability and weldability VDM® Alloy 188 has a face-centred cubic structure. High-temperature strength is obtained by solid-solution hardening with tungsten and by precipitation of carbides. VDM® Alloy 188 exhibits excellent resistance to hot corrosion by sulphidation, and is especially resistant to oxidation up to temperatures of 1,150 °C (2,100 °F), under both static and cyclic conditions, even under high gas velocities. This corrosion resistance, combined with good mechanical properties, make this alloy suitable for many high-temperature applications. VDM® Alloy 188 is used for applications requiring high mechanical properties at high temperatures. Recommended service temperature range is up to 1,100 °C (1,830 °F). Typical fields of application for VDM® Alloy 188 are: Components for industrial and aircraft gas turbines, including combustion cans, housings, turbine rings, afterburners, casings and ducts Air heaters Furnace muffles, rolls and radiant tubes High-temperature heat exchangers, valves and springs VDM® Alloy 188 can be easily formed both hot and cold and can also be machined. The weldability of VDM® Alloy 188 is excellent. Joining can be performed by all conventional welding processes.