Haynes® 263 Alloy

UNS N07263
W.Nr 2.4650

Applications

Aircraft and land-based turbine components.

Description

Haynes® 263 alloy is an age-hardenable Ni-Co-Cr-Mo alloy designed to combine very good aged strength properties with excellent fabrication characteristics in the annealed condition. While its strength at high temperature is not quite as high as Waspaloy or R-41, it is far easier to form or weld than these alloys.  Alloy 263 exhibits excellent intermediate temperature tensile ductility, and is not normally subject to strain age cracking problems common for gamma prime strengthened alloys.

Nominal Composition

C: 0.04 - 0.08
Mn: 0.60 max
Si: 0.40 max
P: 0.015 max
S: 0.007 max
Cr: 19.0 - 21.0 
Co: 19.0 - 21.0
Mo: 5.60 - 6.10 
Ti: 1.90 - 2.40
Al: 0.30 - 0.60
Fe: 0.70 max 
Cu: 0.20 max 
Ni: Balance

Physical Properties

Density: 0.302 lb/in3, (8.36 g/cm3)

Modulus of Elasticity (E): 
At 70°F (20°C): 32.1 x 103 ksi (221 GPa)

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

Electrical Resistivity: 45.3 µΩ.in, (115 µΩ.cm)

Thermal Conductivity: 81 Btu-in/ft2hr-°F, (11.7 W/m-K)

Applicable Specifications

Strip: AMS 5872

Typical Mechanical Properties

  • Annealed
    • Heat Treatment: 1900 - 2150°F (1038 - 1177°C)
    • Tensile Strength: 128 ksi (882 MPa) typ
    • Suggested Operating Conditions: -300°F to 1650°F (-184°C to 900°C)
  • After Precipitation Heat Treat
    • Heat Treatment: 1475°F (802°C), 8h, AC
    • Tensile Strength: 164 ksi (1130 MPa) typ
    • Suggested Operating Conditions: -300°F to 1650°F (-184°C to 900°C)

  • Haynes® is a registered trademark 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