Cobalt Nickel 188 Sheet

By Author: Bhavesh Sanghvi
Total Articles: 20
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Cobalt Nickel 188, also known as Haynes 188 or Alloy 188, is a cobalt-nickel-chromium-tungsten alloy known for its high-temperature strength, excellent oxidation resistance, and good fabricability. Here are some key properties and uses:

Key Properties
High-Temperature Strength: Maintains its strength at elevated temperatures.
Oxidation Resistance: Excellent resistance to oxidation up to 2000°F (1093°C).
Fabricability: Good formability and weldability.
Corrosion Resistance: Good resistance to corrosion in various environments.
Chemical Composition
Cobalt (Co): ~39-41%
Nickel (Ni): ~20-24%
Chromium (Cr): ~21-23%
Tungsten (W): ~13-15%
Carbon (C): ~0.05-0.15%
Manganese (Mn): ~1.25-1.75%
Silicon (Si): ~0.2-0.5%
Lanthanum (La): ~0.02-0.12%
Applications
Aerospace: Components in gas turbine engines, combustors, and afterburners.
Industrial Gas Turbines: Turbine blades and vanes.
Power Generation: Components exposed to high temperatures.
Chemical Processing: Equipment and parts requiring high-temperature resistance.
Forms
Cobalt Nickel 188 is available in various forms, including sheets, plates, bars, and tubing.

Processing and Fabrication
Forming: Can be formed using conventional techniques.
Welding: Suitable for welding using standard methods.
Machining: Requires carbide-tipped tools due to its strength and hardness.

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