DESCRIPTION
HAYNES® HR-224TM alloy is a Ni-Fe-Cr-Al alloy with excellent oxidation resistance and improved fabricability & weldability compared to HAYNES® 214® alloy. The alloy obtains its oxidation resistance via the formation of a protective alumina layer. It exhibits excellent formability characteristics with weldability comparable to nickel-iron-chromium alloys with reduced aluminum contents.
Applicable Specifications
Strip and Foil: N/A
Applications
Heat recuperators, Automotive catalytic converters and Heat shields, Strand annealing furnace tubes, Fuel cells, Gas separation units
Industries Supplied
Automotive, Industrial Heat Treating, Chemical Processing
Nominal Composition
C: .03 – .07
Ni: balance
Co: 2.0 max
Fe: 25.0 – 30.0
Cr: 19.0 – 23.0
Mo: 0.50 max
Al: 3.10 – 3.90
Si: 0.30 – 0.50
W: 0.50 max
Mn: 0.20 – 0.50
Nb (Cb): 0.15 max
Ti: 0.20 – 0.50
B: 0.004 max
Zr: 0.025 max
Physical Properties at 70°F
Density:
0.280 lb/in3
Modulus of Elasticity (E):
28.5 x 103 ksi
Coefficient of Expansion:
8.3 microinches/in.-ºF (1200ºF)
Electrical Resistivity:
48.6 μohm-in
Thermal Conductivity:
69 Btu-in./ft.2hr.-°F
Physical Properties at 20°C
Density:
7.72 g/cm3
Modulus of Elasticity (E):
197 GPa
Coefficient of Expansion:
14.8 µm/m-ºC (600ºC)
Electrical Resistivity:
123.5 µohm-cm
Thermal Conductivity:
10.0 W/m-K
Typical Mechanical Properties
Annealed
- Heat Treatment: 2025 – 2075ºF (1107 – 1135ºC)
- Tensile Strength: 100 ksi (690 MPa)
- Suggested Operating Conditions: 70°F to 2000°F (20°C to 1093°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.
