Wear resistant and corrosion-resistant tungsten carbide (WC) based hard alloy powder WC10Co4Cr
- Hardness
- 1100-1300 HV (spray state)， higher after heat treatment
- Bond strength
- ≥ 70 MPa (HVOF process)
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WC-10Co-4Cr is a tungsten carbide (WC) - based hard alloy powder, belonging to the internationally recognized grade (commonly used in the field of thermal spraying), composed of tungsten carbide (WC) particles as the hard phase and cobalt (Co) and chromium (Cr) as the bonding phases. This powder is designed specifically for supersonic flame spraying (HVOF) and high-speed air fuel spraying (HVAF), providing extremely high wear resistance, corrosion resistance, and impact resistance, and is widely used for component protection under harsh working conditions. WC10Co4Cr， Meets the following standards:
ISO 14920 (Thermal Spray Metal Powder)
AMS 7877 (American Aerospace Materials Standard)
Similar grades: WC-10Ni (corrosion-resistant version replacing Co), WC-17Co (higher toughness), etc
Aviation coating: anti wear for turbine blade sealing surfaces and compressor components; Advantages: Resistance to high temperature airflow erosion, extended overhaul cycle
Petrochemical corrosion-resistant components
Chemical pump valves: drilling pump plungers, valve sealing surfaces (resistant to H ₂ S/CO ₂ corrosion); Advantage: Cr element significantly enhances acid resistance and is more suitable for corrosive environments than WC-17Co.
Wear resistant parts for construction machinery
Excavator bucket: excavator bucket blade, mining crusher roller surface; Advantages: Resistant to abrasive wear from sand and gravel, with a lifespan increase of 3-5 times.
Paper industry roller shaft
Paper making rollers: surface strengthening of paper drying rollers and calendering rollers; Advantages: Reduce fiber wear and maintain surface smoothness.
WC~86% provides ultra-high hardness and wear resistance (hardness ≥ 1200 HV)
Co~10% enhances toughness and improves coating bonding strength
Cr~4% improves corrosion resistance (especially in acidic/salt spray environments)
Other trace amounts may contain small amounts of carbon (C) to stabilize the WC structure
Hardness 1100-1300 HV (spray state), can be higher after heat treatment
Combined strength ≥ 70 MPa (HVOF process)
Corrosion resistance superior to pure WC Co, Cr forms a passive film to resist corrosive media such as Cl ⁻ and H ₂ S
Excellent wear resistance, suitable for abrasive wear and erosion wear (such as pump valves, screw conveyors)
Applicable process HVOF (optimal) HVAF、 Plasma spraying (parameters need to be optimized to prevent WC decomposition)
ISO 14920 (Thermal Spray Metal Powder)
AMS 7877 (American Aerospace Materials Standard)
Similar grades: WC-10Ni (corrosion-resistant version replacing Co), WC-17Co (higher toughness), etc
Typical application scenarios
Aeroengine componentsAviation coating: anti wear for turbine blade sealing surfaces and compressor components; Advantages: Resistance to high temperature airflow erosion, extended overhaul cycle
Petrochemical corrosion-resistant components
Chemical pump valves: drilling pump plungers, valve sealing surfaces (resistant to H ₂ S/CO ₂ corrosion); Advantage: Cr element significantly enhances acid resistance and is more suitable for corrosive environments than WC-17Co.
Wear resistant parts for construction machinery
Excavator bucket: excavator bucket blade, mining crusher roller surface; Advantages: Resistant to abrasive wear from sand and gravel, with a lifespan increase of 3-5 times.
Paper industry roller shaft
Paper making rollers: surface strengthening of paper drying rollers and calendering rollers; Advantages: Reduce fiber wear and maintain surface smoothness.
Main components
Function of component content (wt%)WC~86% provides ultra-high hardness and wear resistance (hardness ≥ 1200 HV)
Co~10% enhances toughness and improves coating bonding strength
Cr~4% improves corrosion resistance (especially in acidic/salt spray environments)
Other trace amounts may contain small amounts of carbon (C) to stabilize the WC structure
Key performance characteristics
Performance values/descriptionHardness 1100-1300 HV (spray state), can be higher after heat treatment
Combined strength ≥ 70 MPa (HVOF process)
Corrosion resistance superior to pure WC Co, Cr forms a passive film to resist corrosive media such as Cl ⁻ and H ₂ S
Excellent wear resistance, suitable for abrasive wear and erosion wear (such as pump valves, screw conveyors)
Applicable process HVOF (optimal) HVAF、 Plasma spraying (parameters need to be optimized to prevent WC decomposition)
If specific spraying parameters are required (such as fuel type, powder feeding rate), process guidance can be provided!
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