High-Performance Co12 Cobalt-Based Alloy: China Factory Suppliers for Extreme Wear Resistance Solutions

• Rockwell Hardness (HRC): 40–50 HRC (up to 55 HRC after heat treatment)
• Vickers Hardness (HV): ~1500–1700 HV
• High carbon (1.5%) and tungsten (8.0%) form hard WC precipitates, enhancing resistance to high-stress friction and particle erosion (e.g., gears, screws in continuous operation).

• Melting point: ~1480°C (far exceeding ordinary steel and nickel-based alloys)
• Maintains structural integrity at temperatures up to 800°C, thanks to cobalt’s solid-solution strengthening and tungsten’s creep resistance.

• Chromium oxide (Cr₂O₃) layer resists acids (e.g., HCl, H₂SO₄), alkalis, and saline solutions.
• Less resistant to HF and concentrated HNO₃ (avoid exposure to strong reducing environments).

• Gas atomization ensures high powder density (>99.5%), minimizing residual stress and cavitation risk.
• Cobalt’s inherent toughness provides fatigue resistance for cyclic loads (e.g., valve actuation).

Used in petrochemical and natural gas sectors for ball valves, gate valves, and check valves exposed to high-temperature steam (>500°C) and corrosive media (e.g., sulfur-containing natural gas).

Injection molding screws, compressor rotors, and woodworking saw blades requiring resistance to frictional heat and particulate erosion.

Deposited onto steel or low-alloy steel substrates to improve wear and corrosion resistance (e.g., mining machinery gears, pump linings). Also used in high-temperature aerospace components like rocket engine nozzles and combustion chamber liners.

Fuel rod supports, high-temperature steam pipes in nuclear reactors, and superheater tubes in coal-fired power plants resistant to thermal oxidation and stress corrosion cracking.