[Characteristics]

⑴ Excellent Heat Resistance
Cobalt-based alloys maintain structural integrity and performance stability even at temperatures up to 1150°C, making them ideal for high-temperature environments.

⑵ High Strength and Toughness
These alloys retain high strength and good toughness even at elevated temperatures, suitable for prolonged exposure to thermal loads.

⑶ Outstanding Corrosion and Oxidation Resistance
The addition of chromium imparts excellent oxidation and corrosion resistance, especially in harsh corrosive environments.

⑷ Superior Wear Resistance
Cobalt-based alloys offer high hardness and wear resistance, commonly used in tools, valves, bearings, and other wear-prone components.

⑸ Good Biocompatibility
In the medical field, cobalt-based alloys are widely used for artificial joints and implants due to their excellent biocompatibility.

⑹ Difficult to Machine
Due to their high strength and low thermal conductivity, cobalt-based alloys are categorized as difficult-to-cut materials and present higher machining challenges.

[Main Composition and Structure]

Main elements: Cobalt (Co, approx. 50%–60%), Chromium (Cr, 20%–30%), Tungsten (W, 3%–21%), Nickel (Ni, 2%–4%), and may also contain molybdenum (Mo), iron (Fe), carbon (C), etc.

[Structural Features]

Primarily a solid-solution-strengthened austenitic (fcc) matrix, with dispersed carbides. Some high-temperature alloys rely on carbide strengthening.