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Model No: Cobalt Alloy L605
AMS 5537/ AMS 5759/ Alloy 25/Cobalt Alloy L605 Sheet
AMS5537 is a specification for Cobalt Alloy, Corrosion and Heat-Resistant, Sheet, Strip, Foil, and Plate, Cobalt L605 (also known as alloy 25) is a cobalt-based superalloy with high levels of chromium and tungsten. It is characterized by outstanding high-temperature strength up to 1500 °F (1093 °C).
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
AMS 5537 is a specification for Cobalt Alloy, Corrosion and Heat-Resistant, Sheet, Strip, Foil, and Plate, This specification covers a corrosion and heat-resistant cobalt alloy in the form of sheet, strip, foil, and plate up to 2.250 inches (57.15 mm) inclusive, in nominal thickness.
Cobalt L605 (also known as alloy 25) is a cobalt-based superalloy with high levels of chromium and tungsten. It is characterized by outstanding high-temperature strength up to 1500 °F (1093 °C), excellent oxidation resistance at high temperatures up to 2000 °F (1093 °C) in corrosive environments, and superior resistance to sulfidation wear and galling.
Cobalt Alloy L605 Sheet also has good sulfidation resistance and is well known for resistance to wear and galling. Alloy L605 is used in applications requiring moderate strength and good oxidation resistance at high temperatures. L605 is non-magnetic, and the high chromium content provides resistance to corrosion in a wide range of environments such as marine, hydrochloric and nitric acids, and wet chlorine.
Chemical Composition
| Element | Min (%) | Max (%) |
| Carbon, C | 0.05 | 0.15 |
| Manganese, Mn | — | ≤ 2.00 |
| Silicon, Si | — | ≤ 0.40 |
| Sulfur, S | — | ≤ 0.015 |
| Phosphorus, P | — | ≤ 0.02 |
| Chromium, Cr | 19.0 | 21.0 |
| Molybdenum, Mo | 1.20 | 1.40 |
| Iron, Fe | — | ≤ 3.00 |
| Tungsten, W | 14.0 | 16.0 |
| Nickel, Ni | 9.0 | 11.0 |
| Cobalt, Co | — | *Balance |
Mechanical and Physical Properties
| Property | Imperial | Metric |
| Density | 0.335 lb/in3 | 9.27 g/cm3 |
| Melting Range | 2425 – 2570 °F | 1330 – 1410 °C |
| Tensile Strength | 154 ksi | 1061 MPa |
| Tensile Strength, Yield 0.2% | 75 ksi | 517 MPa |
| Elongation in 2 inches (50 mm) | 55 % | 55 % |
| Elongation A5 | 25 % | 25 % |
| Electrical Resistivity | 34.9 µΩ in | 88.6 µΩ cm |
| Magnetic Permeability at 200 oersteds | 1.002 | 1.002 |
| Thermal Conductivity | 65 Btu⋅in/ft2 h °F | 9.4 W/m K |
| Specific Heat | 0.092 Btu/lb °F | 385 J/kg °C |
| Coefficient of Thermal Expansion, RT – 200°F | 6.8 × 10-6 in/in °F | 12.3 µm/m °C |
| Resistance on air (up to the temperature listed) | 1994 °F | 1090 °C |
Applications
- Aircraft engine combustor liners
- Jet engine and aerospace components
- Land based gas turbine combustor liners
- Industrial furnace lines
- Mufflers and liners for high temperature kilns
- High temperature ball bearings
- Marine turbines
Working
This cobalt alloy features good fabricability, and it can be machined, welded, and formed through most standard methods. Welding using a submerged arc welding process is not recommended, but other methods like tungsten arc, shielded metal arc, and gas metal arc welding are acceptable - use minimum restraint and low interpass temperatures, with rapid cooling afterward. Alloy 25 is very ductile, with good forming characteristics for both hot and cold working.
Lork Group are suppliers of Alloy 25 in sheet, coil, round bar, and plate stock in a variety of lengths and widths, and we can custom cut this material to your exact specifications. Our can also be slit to your desired width.
