Alloy 188 is a cobalt base superalloy with a unique combination of high temperature strength and oxidation resistance, along with adequate ductility after prolonged exposure to the 1400-1600°F temperature range.

Cobalt alloys have an inherent advantage over the nickel base grades in high temperature creep. Alloy 188 is solid solution strengthened by a 14% tungsten addition, and further by M6C and M23C6 carbides. Alloy 188 is readily fabricated, being welded by both manual and automatic methods including electron beam, gas tungsten arc and resistance welding.

Common Trade Names : Alloy 188

Specifications ：AMS 5608, AMS 5801, EN 2.4683, PWA 1042, UNS R30188, Werkstoff 2.4683

Features:

Strength and oxidation resistant to 2000°F

Good post-aging ductility

Resistant to sulfate deposit hot corrosion

Applications :

Gas turbine engine combustor cans, spray bars, flame-holders and afterburner liners