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Ensinger PEI
Sylvania SD251 Tungsten & Chrome Based Thermal Spray Powder
Categories: Ceramic; Carbide; Metal; Nonferrous Metal; Tungsten Alloy; Other Engineering Material; Ceramic/Metallic Coating

Material Notes: General Description

SD251 is a tungsten carbide/cobalt plasma spray powder. The major constituent is W2C. Additionally, WC and complex Co-W-C compounds are present. Due to the fine particle size, it does not flow through a Hall Flow Meter. SD251 is used for standard low-energy plasma applications. Typical applications for SD251 are wear-resistant coatings.


  • Thread Guides
  • Screw Conveyors
  • Jet-engine Components
  • Pump Parts

Available Properties
  • Bulk Density
  • Particle Size, ASTM B822, 10 wt% max
  • Particle Size, ASTM B822, 65 wt% min
  • Particle Mesh Size, 100% smaller
  • Particle Mesh Size, 0.5% bigger
  • Carbon, C
  • Cobalt, Co
  • Tungsten, W
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