- Excellent oxidation resistance up to 1093°C (2000°F)
- Superior high-temperature strength and creep resistance
- Outstanding thermal fatigue resistance
- Good resistance to sulfidation and hot corrosion
Haynes 188 Round Bar
Haynes 188 round bar is a cobalt-nickel-chromium-tungsten alloy engineered for exceptional performance in extreme high-temperature environments. Known for excellent oxidation resistance, thermal fatigue resistance, and mechanical strength, Haynes 188 is widely used in aerospace, gas turbine, and industrial heat-processing industries.
This alloy maintains excellent structural integrity during prolonged exposure to elevated temperatures, making it a preferred material for components operating in oxidizing environments.
Key Features
- Excellent oxidation resistance up to 1093°C (2000°F)
- Superior high-temperature strength and creep resistance
- Outstanding thermal fatigue resistance
- Good resistance to sulfidation and hot corrosion
- Excellent fabricability and weldability
- Stable mechanical properties during thermal cycling
- Suitable for severe aerospace and furnace applications
Chemical Composition
| Element | Composition (%) |
| Cobalt (Co) | Balance |
| Nickel (Ni) | 20.0 – 24.0 |
| Chromium (Cr) | 20.0 – 24.0 |
| Tungsten (W) | 13.0 – 16.0 |
| Iron (Fe) | ≤ 3.0 |
| Manganese (Mn) | ≤ 1.25 |
| Silicon (Si) | ≤ 0.50 |
| Carbon (C) | 0.05 – 0.15 |
| Lanthanum (La) | 0.02 – 0.12 |
Applications
Haynes 188 round bar is commonly used in industries requiring excellent heat resistance and long-term structural stability.
Common Applications
- Aerospace engine components
- Gas turbine combustion chambers
- Exhaust system components
- Industrial furnace hardware
- Heat shields and ducting systems
- Thermal processing equipment
- Petrochemical high-temperature components
- High-temperature fasteners and support structures
FAQ
What is Haynes 188 round bar used for?
Haynes 188 round bar is widely used for aerospace engine parts, gas turbines, heat treatment systems, and high-temperature industrial equipment.
Is Haynes 188 corrosion resistant?
Yes. Haynes 188 offers excellent oxidation resistance and good resistance to hot corrosion and sulfidation.
What is the UNS designation for Haynes 188?
The UNS number for Haynes 188 is UNS R30188.
Can Haynes 188 be welded?
Yes. Haynes 188 provides excellent weldability using standard welding methods for cobalt-based alloys.
What forms are available for Haynes 188?
Haynes 188 is available in round bar, sheet, plate, wire, pipe, tubing, and forged forms.
Get a quote
Email: sales@hengyimetal.com
WhatsApp: +86 19521258704
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