DESCRIPTION
HAYNES® 233® alloy is a new Ni-Cr-Co-Mo-Al alloy formulated with excellent creep strength (akin to HAYNES 230® alloy) and with oxidation resistance approaching that of HAYNES 214® alloy. The alloy is also readily fabricable, exhibiting good hot workability, cold formability, and weldability. The alloy obtains its oxidation resistance via the formation of a protective alumina layer and high creep strength through solid solution and carbide strengthening. The alloy can be age hardened by heat treatment to produce even greater strength.
Applicable Specifications
Strip and Foil: N/A
Applications
Gas turbine components, Industrial heating fixtures, Structural components
Industries supplied include: Aerospace, Industrial Heat Treating, Power Generation
Industries Supplied
Military and Commercial Aerospace, Chemical Processing, Land-Based Gas Turbines, and Nuclear markets.
Nominal Composition
C: 0.05 – 0.12
Mn: .10 – .40
Si: 0.040 – 0.20
Cr: 18.0 – 20.0
Ni: balance
Co: 18.0 – 20.0
Mo: 7.0 – 8.0
B: 0.006 max
Fe: 1.50 max
Ti: 0.40 – 0.60
Al: 3.0 – 3.5
Ta: 0.40 – 0.80
W: 0.30 max
Zr: 0.050 max
Y: 0.025 max
Physical Properties at 70º
Density:
0.296 lb/in3, (9 g/cm3)
Coefficient of Expansion:
7.8 microinches/in.-ºF (1200ºF)
Electrical Resistivity:
54.4 µohm.in, (0.1 µΩ.cm)
Thermal Conductivity:
138 Btu-in/ft2hr-°F, (10 W/m-K)
Physical Properties at 20º
Density:
8.18 g/cm3
Coefficient of Expansion:
13.8 µm/m-ºC (600ºC)
Electrical Resistivity:
137 µohm-cm
Thermal Conductivity:
19.1 W/m-K
Typical Mechanical Properties
Annealed
- Heat Treatment: 2125 – 2150º (1163 – 1177º)
- Tensile Strength: 140 ksi (965 MPa)
- Suggested Operating Conditions: 70°F to 1400°F (20°C to 760°C)
Age Hardened
- Heat Treatment: 1650°F/4h/AC + 1450°/8h/AC (899° C/4h/AC + 788°C/8h/AC)
- Tensile Strength: 170 ksi (1172MPa)
- Suggested Operating Conditions: 70°F to 1400°F (20°C to 760°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.
