Alloy 188 (UNS R30188)
Category: COBALT ALLOYS
Overview
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 M23C 6 carbides. Alloy 188 is readily fabricated, being welded by both manual and automatic methods including electron beam, gas tungsten arc and resistance welding.
Chemical Composition
| Ni | Cr | Fe | B | Co | W | Mn | Si | La | C | |
| MIN | 20 | 20 | - | - | Balance | 13 | - | 0.2 | 0.02 | 0.05 |
| MAX | 24 | 24 | 3 | 0.015 | Balance | 16 | 1.25 | 0.5 | 0.12 | 0.15 |
Physical Properties
| Density | 9.14 g/cm3 |
| Melting Range | 1300-1330℃ |
Available Products And Specifications
| Flat products | AMS 5608，5801 |
| Bar | AMS 5772 |
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
Keywords: Alloy 188 (UNS R30188)
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Welcome to ZK Alloy, we are professional manufacturer for special alloy materials with twelve years experiences, we mainly produce inconel, monel, hastelloy, high temperature alloy and other nickel based alloy products, which are widely used in aerospace, oil and gas, energy and environmental, automotive, chemical, industrial valves, communication electronics and other industries.
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