Tungsten carbide is widely specified in OEM designs for applications exposed to severe abrasion, erosion, impact, and high-temperature wear. However, achieving optimal performance requires proper consideration of material properties, geometry, tolerances, and assembly methods during the design phase.
This guide provides practical engineering guidelines to support OEMs designing custom tungsten carbide components for high-wear industrial applications.
1.When to Specify Tungsten Carbide in OEM Designs
Tungsten carbide is typically selected when conventional materials fail due to:
• Severe abrasive wear
• High-velocity erosive flow
• Repeated impact or mechanical shock
• Dimensional instability at temperature
• Excessive maintenance or downtime
Early material selection is critical to maximize performance and lifecycle value.
2. Tungsten Carbide Material Properties Relevant to Design
Key properties influencing component design include:
• Extremely high hardness and wear resistance
• High compressive strength
• Limited tensile strength compared to steel
• High elastic modulus
• Dimensional stability under load
Designs should prioritize compressive loading and avoid stress concentrations.
3. Geometry & Design Considerations
Best practices include:
• Avoiding sharp internal corners
• Using generous fillet radii
• Maintaining uniform wall thickness
• Minimizing unsupported spans
• Designing for compressive rather than tensile stress
These considerations reduce the risk of cracking and premature failure.
4. Tolerances & Dimensional Control
Tungsten carbide components can be manufactured to tight tolerances, but realistic design expectations are essential.
Typical considerations:
• Precision grinding for functional surfaces
• Looser tolerances on non-critical features
• Allowance for shrink-fit or press-fit assemblies
Early tolerance definition improves manufacturability and cost control.
5. Surface Finish Requirements
Surface finish affects both wear performance and assembly:
• Fine finishes reduce friction and erosion
• Rougher finishes may improve retention in bonded assemblies
• Polished surfaces are recommended for sealing interfaces
Surface finish should be specified based on functional requirements.
6. Assembly & Joining Methods
Common OEM assembly approaches include:
• Shrink fitting into steel housings
• Mechanical retention (shoulders, collars)
• Brazing or bonding for specific applications
Assembly method selection must account for differential thermal expansion and operating loads.
7. Wear Mechanism–Driven Design
Component design should align with the dominant wear mechanism:
• Abrasion: maximize wear thickness and contact area
• Erosion: optimize flow paths and impact angles
• Impact: reinforce high-stress zones
• Corrosion–erosion: select appropriate carbide grade
8. Prototyping, Testing & Iteration
OEM designs often benefit from:
• Prototype validation
• Field testing under real operating conditions
• Iterative geometry or grade refinement
This approach reduces risk before full-scale production.
9. Engineering Support for OEM Designs
Design Support for Tungsten Carbide Components
Our engineering team works with OEMs to optimize material selection, geometry, and manufacturability for high-wear applications.