Cobalt Alloy 25, also known as L-605, UNS R30605, and W. Nr. 2.4964, is a solid-solution-strengthened cobalt-chromium-tungsten-nickel alloy with excellent high-temperature strength and excellent oxidation resistance to 2000°F (1093°C). It is highly regarded for its exceptional high-temperature strength, excellent wear resistance, and good corrosion resistance. This alloy is commonly utilized in gas turbine engine components, such as combustion chambers, afterburner liners, and turbine blades, as well as in medical implants and industrial applications where high temperature and wear resistance are essential.
Whatsapp:
+8615900526263E-mail:
sales@cocessalloys.comChemical Composition
|
Carbon (C) |
0.05-0.15 % |
|
Manganese (Mn) |
1.0-2.0 % |
|
Silicon (Si) |
0.40 % max. |
|
Chromium (Cr) |
19.0-21.0 % |
|
Nickel (Ni) |
9.0-11.0 % |
|
Tungsten (W) |
14.0-16.0 % |
|
Phosphorus (P) |
0.040 % max. |
|
Sulfur (S) |
0.030 % max. |
|
Iron (Fe) |
3.0 % max. |
|
Cobalt (Co) |
Balance |
Physical Properties
|
Density |
lb/in3 |
0.335 |
|
|
g/cm3 |
9.27 |
|
Melting Range, |
°F |
2426-2570 |
|
|
°C |
1330-1410 |
|
Specific Heat at 70°F, |
Btu/lb°F |
0.092 |
|
|
at 21 °C, J/kg°C |
385 |
|
Permeability at 200 oersted |
|
1.002 |
|
Thermal Conductivity, |
Btu•in/ft2•h•°F |
65 |
|
|
W/m•°C |
9.4 |
|
Electrical Resistivity (75°F) |
ohm•circ mil/ft |
533.2 |
|
|
(24°C), microohm-m |
0.886 |
Mechanical Properties
|
Form |
Temperature |
Dimensions |
Yield Strength |
Tensile Strength Rm |
Elongation A |
Hardness Brinell |
|||
|
mm |
in |
MPa |
ksi |
MPa |
ksi |
% |
Max HB |
||
|
Strip |
Room Temperature |
0.02-2.5 |
0.01-0.1 |
380 |
58 |
900 |
130 |
Transverse 30 |
282 |
Cobalt Alloy 25, also known as L-605, is utilized in a variety of demanding applications due to its exceptional high-temperature strength, wear resistance, and corrosion resistance. Some typical applications of Cobalt Alloy 25 (L-605) include:
1. Gas Turbine Engine Components: It is commonly used in gas turbine engine components, such as combustion chambers, afterburner liners, and turbine blades, due to its excellent high-temperature strength and resistance to wear and corrosion in harsh operating conditions.
2. Aerospace and Aircraft Components: Cobalt Alloy 25 is employed in aerospace and aircraft applications, including in the construction of aircraft engine components, where high-temperature strength and wear resistance are critical.
3. Medical Implants: It finds use in medical applications for the production of orthopedic implants, such as hip and knee replacements, due to its biocompatibility and resistance to wear and corrosion in the human body.
4. Industrial Cutting Tools: It is utilized for the production of industrial cutting tools, such as drills, end mills, and inserts, where high-temperature strength and wear resistance are essential for extended tool life.
5. Industrial Furnace Components: Cobalt Alloy 25 is used in the construction of industrial furnace components, such as muffles and retorts, where resistance to high-temperature corrosion and thermal cycling is required.
6. Petrochemical and Chemical Processing Equipment: It finds applications in the petrochemical and chemical processing industries for the construction of equipment that operates in aggressive and high-temperature environments.
Specifications for Cobalt Alloy 25 (L-605) include the following:
|
Sheet, plate, strip |
Billet, rod, bar |
Forgings |
Bare Welding Rods and Wire |
Coated Electrodes |
|
AMS 5537 |
AMS 5759 |
AMS 5759 |
AMS 5796 |
AMS 5797 |
Standard product forms of Cobalt Alloy 25 (L-605) are pipe, tube, sheet, strip, plate, round bar, flat bar, forging stock, hexagon and wire. The products are available in a wide variety of sizes. Please contact us at sales@cocessalloys.com for full information.
