Haynes® HR-120® Alloy

UNS N08120
W.Nr N/A


Heat treat furnaces and fixtures, incinerators, radiant tubes, recuperators, fluidized bed components.


Haynes® HR-120® alloy is a solid solution strengthened heat resistant alloy that provides excellent strength at elevated temperature combined with very good resistance to carburizing and sulfidizing environments.  Its oxidation resistance is comparable to other widely used Fe-Ni-Cr materials but its strength at temperatures up to 2200°F is significantly higher.  The alloy can be readily cold or hot formed and is commonly welded using Haynes  556® filler wire.

Nominal Composition

C: 0.02 - 0.10
Mn: 1.50 max
Si: 1.00 max
P: 0.040 max
S: 0.030 max
Cr: 23.0 - 27.0 
Co: 3.0 max 
Mo: 2.50 max
W: 2.50 max
Fe: Balance
Al: 0.40 max
Cu: 0.50 max
Ni: 35.0 - 39.0

Physical Properties

Density: 0.291 lb/in3, (8.07 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 28.6 x 103 ksi (197 GPa)

Coefficient of Expansion:
9.0 µin/in.-°F (70°F to 1000°F)
16.1 µm/m-°C (20°C to 538°C)

Electrical Resistivity: 41.1 µΩ.in, (105.2 µΩ.cm)

Thermal Conductivity: 78 Btu-in/ft2hr-°F, (11.4 W/m-K)

Applicable Specifications

Strip: ASTM B409

Typical Mechanical Properties

  • Annealed
    • Heat Treatment: 2150 - 2210°F (1177 - 1210°C)
    • Tensile Strength: 90 ksi (621 MPa) min
    • Suggested Operating Conditions: -300°F to 2200°F (-184°C to 1200°C)

  • Haynes® and Haynes HR-120® are registered trademarks of Haynes International, Inc.

    For further information Contact:

    Email: stripinfo@elgiloy.com
    Phone: 1 888 843 2350 
    Elgiloy Specialty Metals - Strip Products
    1565 Fleetwood Dr.
    Elgin, IL 60123 USA