High-Temperature Strength & Oxidation Resistance – Exotic
Metals
LLP
The Haynes portfolio is distinguished by its ability to
operate at temperatures exceeding 1000°C.
Haynes High-Temperature Alloys
- Haynes 188 (UNS R30188): A cobalt-nickel-chromium-tungsten alloy. It is the premier
choice for gas turbine applications, combining excellent high-temperature strength with
superior resistance to sulfidation and oxidizing environments up to 1095°C.
- Haynes 230 (UNS N06230): A nickel-chromium-tungsten-molybdenum alloy. It offers the best
balance of high-temperature strength, thermal stability, and resistance to nitridation.
It is frequently used for combustion cans and transition ducts in jet engines.
Comparison: 188 vs. 230
| Property |
Haynes 188 |
Haynes 230 |
| Base Metal |
Cobalt-based |
Nickel-based |
| Max Service Temp |
2000°F (1095°C) |
2100°F (1149°C) |
| Primary Strength |
Solid-solution (Tungsten) |
Solid-solution (W + Mo) |
| Typical Use |
Flame holders, liners |
Catalyst grid supports, bellows |
Specialized Corrosion & Dimensional Stability
Haynes High-Temperature Alloys
- Haynes 160 (UNS N12160): A high-silicon nickel-cobalt-chromium alloy. It provides
extraordinary resistance to high-temperature corrosion, particularly in sulfidizing and
chloride-bearing atmospheres. It is indispensable for waste incinerators and chemical
reactors.
- Haynes 242 (UNS N10242): An age-hardenable alloy that derives its strength from a
long-range-ordering reaction. It is unique for its low thermal expansion characteristics
and high ductility, making it ideal for containment rings and seal rings where
dimensional control is critical.
Chemical Composition (% Weight)
| Alloy |
Ni (%) |
Co (%) |
Cr (%) |
W (%) |
Mo (%) |
Si (%) |
| 188 |
22.0 |
39.0* |
22.0 |
14.0 |
— |
0.35 |
| 230 |
57.0* |
5.0 max |
22.0 |
14.0 |
2.0 |
0.40 |
| 160 |
37.0* |
30.0 |
28.0 |
— |
— |
2.75 |
| 242 |
65.0* |
2.5 max |
8.0 |
— |
25.0 |
0.80 max |
Product Availability for Exotic Metals LLP
- Round Bars: 6mm to 200 mm diameter (Centerless ground or peeled).
- Sheets & Plates: 0.5mm to 50 mm thickness; width up to 2000mm.
- Pipes & Tubes: Seamless and welded options, including high-pressure hydraulic tubing.
- Forgings: Custom-forged rings, blocks, and flanges as per customer drawings.
Weight Chart: Round Bar (Theoretical kg/m)
| Diameter (mm) |
Haynes 188 (kg/m) |
Haynes 242 (kg/m) |
| 10 |
0.70 |
0.71 |
| 25 |
4.41 |
4.44 |
| 50 |
17.63 |
17.77 |
| 80 |
45.14 |
45.49 |
