Wire – L605 (Haynes 25)

Wire – L605 (Haynes 25)

L605 (Haynes® 25)

UNS R30605
W.Nr 2.4964/2.4967


Bearings, shafts, springs and surgical fixation wire.


Udimet® alloy L605 (Haynes® alloy 25) is a Cobalt-Chromium-Tungsten solid-solution strengthened alloy with excellent mechanical strength and oxidation resistance at high temperatures.  This alloy also has good fatigue resistance and galling resistance.

Industries Supplied

Medical and Aerospace.

Nominal Composition

Cr: 19 – 21
W: 14 – 16
Ni: 9 – 11
Fe: 3.0 max
Mn: 1 – 2
Co: balance
Si: 0.40 max
C: 0.05 – 0.15
P: 0.04 max
S: 0.03 max

Physical Properties

Density: 0.335 lb/in3, (9.27 g/cm3)

Modulus of Elasticity (E):
At 70°F (20°C): 32.6 x 103 ksi (225 GPa)

Coefficient of Expansion:
7.6 µin/in.-°F (70°F to 600°F)
13.6 µm/m-°C (20°C to 300°C)

Electrical Resistivity: 34.9 µΩ.in, (88.6 µΩ.cm)

Thermal Conductivity: 65.0 Btu-in/ft2hr-°F, (9.4 W/m-K)

Applicable Specifications

Wire & Bar: AMS 5759, AMS 5796, ASTM F90, ISO 5832-5, NACE MRO175 (ISO 15156-3).

Typical Mechanical Properties – Spring Applications

  • Annealed
    • Heat Treatment: 2155°F (1180°C)
    • Tensile Strength: 130 – 180 ksi; (896 – 1240 MPa)
    • Suggested Operating Conditions: -330°F to 1200°F (-200°C to 650°C)
  • Spring Temper
    • Tensile Strength: 220 – 280 ksi; (1517 – 1930 MPa)
    • Suggested Operating Conditions: -300°F to 1200°F (-200°C to 650°C​)

Udimet® is a registered trademark of the Special Metals Corporation group of companies, Haynes® is a registered trademark of Haynes International, Inc.

For further information Contact:

Contact Us
Phone: 1 847 695 1900
Elgiloy Specialty Metals – Wire Products
356 N.Cross Street
Sycamore, IL 60178 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 of Chicago L.L.C., 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 of Chicago L.L.C., 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 of Chicago L.L.C., be liable for any damages whatsoever arising from the use of the information included in the data sheets.