DP2781 Alloy 188 Powder (UNS R30188)

Alloy 188 Powder Description

Alloy 188 (UNS R30188) is a cobalt-based superalloy that combines high-temperature strength and oxidation resistance up to 1 093°C, and exhibits controlled post-ageing behaviour. The alloy retains its ductility after prolonged exposure to elevated temperatures. Alloy 188 also demonstrates high resistance to hot corrosion caused by sulphate deposits. The alloy can be processed by both manual and automated methods, such as electron-beam, tungsten inert gas and resistance welding.

Stanford Advanced Materials is a global supplier of high-quality Alloy 188 Powder and has more than 20 years of experience in manufacturing and trading Alloy 188 Powder.

Alloy 188 Powder Specifications

Applications of Alloy 188 Powder

Alloy 188 Powder exhibits verified formability and weldability. The powder is suitable for forging or other hot forming processes provided that it is held at 1 175°C (2 150°F) for a sufficient period to ensure that the entire component reaches the required temperature. Owing to its retained ductility, Alloy 188 may also be shaped by cold forming. However, since the alloy hardens rapidly, intermediate annealing treatments are often required during complex component forming procedures. All hot- or cold-formed parts should undergo annealing and be rapidly cooled to restore the intended balance of properties.

The worked Alloy 188 is delivered in the solution-annealed condition unless stated otherwise. The alloy is typically solution-annealed at 1 163–1 191°C (2 125–2 175°F) and is then rapidly cooled or water quenched to achieve the target properties. Annealing at temperatures lower than the solution-anneal temperature causes carbide precipitation in Alloy 188, which may affect the alloy’s performance.

Alloy 188 Powder possesses a set of characteristics that render it applicable for multiple uses in the aerospace sector. It is used in military and commercial gas-turbine engines for combustion cans, transitions and afterburner components.