Haynes® High-Temperature Alloys
Premium Cobalt-based superalloys developed for the most demanding high-temperature applications. Known for excellent strength up to 1800°F (980°C) and superior resistance to sulfidation and wear.
Haynes 25 (L605)
A cobalt-nickel-chromium-tungsten alloy that combines excellent high-temperature strength with good oxidation resistance up to 1800°F. It is also known for excellent resistance to metal galling.
View Haynes 25 Details
Haynes 188
A cobalt-nickel-chromium-tungsten alloy with a minute addition of lanthanum. It offers better oxidation resistance and thermal stability than Haynes 25, making it the standard for combustor liners.
View Haynes 188 DetailsWhy Choose Cobalt-Based Alloys?
While Nickel-based alloys (like Inconel) are excellent, Cobalt-based alloys like Haynes 25 and 188 offer superior hot corrosion resistance in atmospheres containing sulfur (sulfidation) and molten salts.
They also maintain higher strength at elevated temperatures and are significantly more resistant to wear and galling, making them critical for gas turbine parts that slide or rotate against each other.
| Alloy Grade | UNS No. | Key Advantage | Common Application |
|---|---|---|---|
| Haynes 25 (Alloy L605) |
R30605 | Excellent mechanical strength and galling resistance. | Gas turbine rings, bearings, and industrial furnace parts. |
| Haynes 188 (Alloy 188) |
R30188 | Superior oxidation resistance and thermal stability due to Lanthanum addition. | Combustion cans, transition ducts, and flame holders. |
To support the stringent requirements of aerospace propulsion and extreme high-temperature industrial environments, we supply Haynes® cobalt-based superalloys in the following fully certified product forms:
Plate & Sheet
The core material for fabricating jet engine combustion cans, afterburner liners, and high-temperature transition ducts.
Bar & Rod
Supplied for precision CNC machining of high-temperature bearings, anti-galling valve stems, and wear-resistant bushings.
Forgings
Heavy-duty forged rings and blocks essential for highly stressed gas turbine components operating up to 1800°F.
Wire
Premium cobalt alloy wire used for critical high-temperature springs and specialized welding filler metal applications.
Pipe & Tube
Seamless tubing utilized in demanding aerospace ducting and extreme high-heat industrial furnace piping systems.
Fasteners
Specialty bolts and studs that provide exceptional strength and resist galling (seizing) at extreme operating temperatures.
Need Cobalt-Based Superalloys?
We stock Haynes 25 and 188 in sheet, plate, and bar. Full material certification available.
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