DESCRIPTION
HAYNES® 188 alloy is a cobalt-nickel-chromium-tungsten alloy with excellent high temperature tensile strength, sulfidation, and oxidation resistance up to 1095°C (2000°F) for long term exposures. HAYNES® 188 alloy is not age hardenable, but may be cold worked to achieve higher tensile and yield strength. HAYNES® 188 alloy responds well to conventional forming and welding techniques.
Applicable Specifications
Strip and Foil:
AMS 5608, GE B50A712, PWA 1042, Rolls Royce MSRR 7165
Applications
Combustor liners and cans, furnace liners, flame hoods, gas turbine rotors, and nozzle diaphragm valves.
Industries Supplied
Military and Commercial Aerospace, Chemical Processing, Land-Based Gas Turbines, and Nuclear markets.
Nominal Composition
C: 0.05 – 0.15
Mn: 1.25 max
P: 0.02 max
S: 0.015 max
Si: 0.20 – 0.50
Cr: 21.0 – 23.0
Ni: 20.0 – 24.0
Co: balance
B: 0.015 max
Fe: 3.0 max
W: 13.0 – 15.0
La: 0.03 – 0.15
Physical Properties
Density:
0.3251 lb/in3, (9 g/cm3)
Modulus of Elasticity (E):
At 70°F (20°C): 34 x 103 ksi (232 GPa)
Modulus of Rigidity (G)
At 70°F (20°C): 14 x 103 ksi (93 GPa)
Coefficient of Expansion:
6.6 µin/in.-°F (70°F to 1000°F)
12 µm/m-°C (20°C to 538°C)
Electrical Resistivity:
0.0394 µΩ.in, (0.1 µΩ.cm)
Thermal Conductivity:
73 Btu-in/ft2hr-°F, (10 W/m-K)
Typical Mechanical Properties
Annealed
- Heat Treatment: Per AMS 5608
- Tensile Strength: 130-160 ksi (900-1100 MPa)
- Suggested Operating Conditions: -300°F to 2000°F (-185°C to 1095°C)
Spring Temper
- Heat Treatment: None
- Tensile Strength: Up to 250 ksi (1725 MPa)
- Suggested Operating Conditions: -300°F to 2000°F (-185°C to 1095°C)
HAYNES® is a registered trademark of Haynes International, Inc.
For further information Contact:
CONTACT US
Phone: 1.888.843.2350
Elgiloy Specialty Metals – Strip Products
1565 Fleetwood Dr
Elgin, IL 60123 USA
Limitation of Liability and Disclaimer of Warranty:
- The content in these data sheets is provided primarily by third-party melting mills and is provided for reference only. It is not intended for engineering or design.
- Applications may be discussed, however, Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, does not recommend or endorse any material for any particular end use or application.
- The data included in this data sheet are typical values and may vary.
- Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, makes no representations or warranties, express or implied, as to the accuracy, completeness, condition, suitability, performance, fitness for a particular purpose, or merchantability of any information contained in any data sheet.
In no event will Elgiloy Specialty Metals, a Division of Combined Metals Company LLC, be liable for any damages whatsoever arising from the use of the information included in the data sheets.
