Haynes® 25 L-605 Wire UNS R30605

L-605 is a cobalt based alloy resistant to oxidation and carburization to 1900°F and has good forming and excellent high temperature properties.

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Shaped, Flat, Square, Round, Fine Wire, Plated and Bare Wire ASTM F90, AMS 5537, AMS 5759, AMS 5796, AMS 5797, AMS 5976

L-605 Alloy Description or Haynes® 25 Wire Description

L-605 is a cobalt based alloy resistant to oxidation and carburization to 1900°F and has good forming and excellent high temperature properties. Alloy L-605 can only be hardened significantly by cold working. Cold working will increase creep strength up to 1800°F and stress rupture strength up to 1500°F. Strain aging at 700-1100°F improve creep and stress rupture strengths below 1300°F.


Seal rings for gas turbines
Jet engine components
High temperature ball bearings and races

Chemistry Typical

Cobalt: Remainder
Chromium: 19.00-21.00
Nickel: 9.00-11.00
Tungsten: 14.00-16.00
Manganese: 1.00-2.00
Iron: 3.00 max
Silicon: 1.00 max
Carbon 0.05-0.15
Sulfur: 0.03
Phosphorus: 0.03 max

Physical Properties

Density: 0.330 lbs/in³, 9.13 g/cm³

Electrical Resistivity: micro-ohm-in, (micro-ohm-cm)
At 75°F (24°C): 34.9(89)

Mean Coefficient of Thermal Expansion: µin/in-°F (µm/m-°C)
70-200°F (21-93°C): 6.8(12.3)
70-400°F (21-204°C): 7.2 (12.9)
70-600°F (21-316°C): 7.6(13.5)
70-800°F (21-427°C): 7.8(13.9)
70-1000°F (21-538°C): 8.0(14.4)
70-1200°F (21-649°C): 8.2(14.8)
70-1400°F (21-760°C): 8.6(15.5)
70-1600°F (21-871°C): 9.1(16.2)
70-1800°F (21-982°C): 9.4(17.7)

Thermal Conductivity: BTU-in/ft-°F (watt-cm./cm.²-°C)
300°F (200°C): 82(.130)
500°F (300°C): 97(.147)
700°F (400°C): 112(.166)
900°F (500°C): 127(.185)
1100°F (600°C): 142(.204)
1300°F (700°C): 157(.224)
1500°F (800°C): 172(.244)
1700°F (900°C): 191(.265)

Modulus of Elasticity: KSI(MPa)
32.6 x 10³ (224 x 10³) in tension

Melting Range: 2425-2570°F (1329-1410°C)

Mechanical Properties at Room Temperature

Properties: Annealed

Ultimate Tensile Strength: 130 KSI min (896 MPa min)
Yield Strength (0.2% offset):
Gauges: less than 0.003 inches: 55 KSI min (379 MPa min)
Gauges: 0.003 inches and greater: 55-80 KSI (379-552 MPa)
Elongation: Consult Ulbrich

Properties Tempered

Alloy L-605 can be cold rolled to achieve the temper properties required by specific customers and/or manufacturing requirements. Contact Ulbrich Wire for details.

Additional Properties

Corrosion Resistance

Refer to NACE (National Association of Corrosion Engineers) for recommendations.

Standard Wire Finishes

Extra Clean: (XC) Extra clean is also referred to as “bright annealed” or “bright annealed and cold rolled”

Grease (round wire only): Drawn in a heavy grease produces an “Ultra bright” finish for decorative applications

Soap (round wire only): Soap is used as a lubricant in the drawing process and is not removed. It acts as a lubricant during customer part forming operation. A soap finish is available in tempered products.
Plated: Many plating options are available.
∗Special finishes are available: Contact Ulbrich Wire Sales with special finish and plating requests.


Continuous Coils
Cut to lengths
Precision cutting
Cold Forming
Alloy L605 may be cold or hot-formed by various techniques.


For best results refer to: SSINA’s “Welding of Stainless Steels and Other Joining Methods”
*Alloy 25® is a registered trademark of Haynes Alloys.

Limitation of Liability and Disclaimer of Warranty: In no event will Ulbrich Stainless Steels and Special Metals, Inc., be liable for any damages arising from the use of the information included in this document or that it is suitable for the ‘applications’ noted. We believe the information and data provided to be accurate to the best of our knowledge but, all data is considered typical values only. It is intended for reference and general information and not recommended for specification, design or engineering purposes. Ulbrich assumes no implied or express warranty in regard to the creation or accuracy of the data provided in this

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