Tungsten Carbide Plates

I. Material Composition and Grades

• Tungsten (W) and Cobalt (Co) Content
  Tungsten carbide alloys (cemented carbides) mainly consist of tungsten carbide (WC) and cobalt (Co), with cobalt serving as the binder phase. The cobalt content directly affects the alloy’s toughness and hardness.
  • Higher cobalt content (e.g., 10%–20%): Better toughness, suitable for impact-loading scenarios (e.g., mining tools).
  • Lower cobalt content (e.g., 3%–8%): Higher hardness and wear resistance, ideal for cutting tools or high-wear environments.
  • Example: Grade YG8 denotes a tungsten-cobalt alloy with 8% cobalt, commonly used for wear-resistant components; YT15 contains 15% titanium carbide (TiC), suitable for steel cutting.
• Other Alloying Elements
  Some alloys add titanium (TiC), tantalum (TaC), niobium (NbC), etc., to improve high-temperature resistance and corrosion resistance (e.g., YT-series alloys for stainless steel machining).

II. Physical and Mechanical Property Parameters

• Hardness
  Expressed by Vickers hardness (HV) or Rockwell hardness (HRA). Higher hardness indicates stronger wear resistance.
  • Example: Alloys for wear-resistant components typically have a hardness of HV 1500–2000 (HRA 89–92), while cutting tools can reach over HV 2000.
• Flexural Strength
  Reflects the alloy’s resistance to bending fracture, in MPa. High-cobalt alloys have higher flexural strength (e.g., YG15 has a flexural strength of ~2100 MPa), suitable for impact-bearing applications.
• Density
  Tungsten carbide alloy density is ~14–15.6 g/cm³. Higher density indicates higher WC content and better wear resistance (pure WC density is ~15.6 g/cm³).
• Thermal Conductivity and Coefficient of Thermal Expansion
  Alloys with good thermal conductivity (e.g., YG series) are suitable for high-temperature environments (e.g., molds, cutting tools) to avoid deformation from heat accumulation.

III. Specification and Dimensional Parameters

• Plate Thickness, Width, Length
  • Conventional thickness range: 0.5 mm–100 mm; width and length can be customized (e.g., common 规格: 100 mm × 100 mm × 5 mm). Confirm tolerance ranges (e.g., thickness ±0.05 mm).
• Surface Precision
  • Surface roughness (e.g., Ra ≤0.8 μm): Higher precision is required for precision components.
  • Flatness: Whether the plate is flat, with error range (e.g., ≤0.1 mm per meter).

IV. Processing and Application Parameters

• Application Scenarios
  Clarify the application field (e.g., mining, machining, ballistic protection, etc.), and suppliers can recommend suitable grades based on requirements. For example:
  • Mining alloy plates require high toughness (e.g., YG11C);
  • Alloy plates for steel cutting need TiC addition (e.g., YT14).
• Processing Requirements
  Whether subsequent processing (e.g., cutting, drilling, grinding) is needed: High-hardness alloys require diamond tools for machining. Confirm in advance if the plate is suitable for customized processing.