Wear resistant and corrosion-resistant tungsten carbide (WC) based hard alloy powder WC10Co4Cr

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.

Hardness: 1100-1300 HV (spray state)， higher after heat treatment

Bond strength: ≥ 70 MPa (HVOF process)

Description

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

Typical application scenarios

Aeroengine components
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.

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/description
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)

If specific spraying parameters are required (such as fuel type, powder feeding rate), process guidance can be provided!

FAQ

Q Are you a manufacturer or trader ?

A Yes, we are manufacturer, we have a factory in Deyang City, Sichuan Province, and a factory in Ningxiang city, Hunan Province, and hope you could visit our factory at your convenience.

Q How does your factory control the quality ？

A Quality is the life of our factory, first, each raw materials, come to our factory, we will test it first, if qualified, we will process the manufacturing with this raw materials, if not, we will return it to our supplier, and after each manufacturing step, we will test it, and then all the manufacturing process finished, we will do the final test before the commodities left our factory.

Q How about your service?

A We provide 7*12 hours service, and whenever you need, we will always here with you, and besides, we can provide one stop purchasing for you, and when you purchase our commodities, we can arrange testing, custom clearance, and logistic for you!

Q Does free samples available for quality?

A Yes, of course, we can provide free samples for you before you buy commercial quantity.

Q What is the delivery time?

A For small quantity, it will take only 1-2 days for delivery, and after large quantity, it will take about 1-2 weeks.