TECAPEEK® PVX black

Bearing grade PEEK modification

TECAPEEK PVX black is a modified PEEK material using Victrex® PEEK 450G or Solvay KetaSpire® KT-820 and is classified in the same performance category as Victrex® PEEK™ FC30.

TECAPEEK PVX black was developed especially for bearing and sliding applications. It is based on a PEEK polymer that has been modified with 10% each of PTFE, graphite and carbon fibres. It combines the properties of a high-grade matrix material with special, wear-improving additives. Compared to all PEEK modifications, TECAPEEK PVX black has the lowest coefficient of friction, and shows higher wear resistance. In addition, a comparatively higher dimensional stability under thermal load is achieved. The reinforcement by means of carbon fibre and graphite in low friction PEEK plastic also ensures higher mechanical properties than is normally seen with unfilled PEEK.
Furthermore, it is helpful for a PEEK bearing material to have improved thermal conductivity in order to dissipate the frictional heat generated on the component as much as possible, thus avoiding thermal overload or overheating. In particular, the carbon fibre and graphite fillers in TECAPEEK PVX black help ensure improved thermal conductivity of this PEEK bearing grade. It also results in thermal conductivity that is three times higher than what we find in standard PEEK natural.  
For bearing and sliding applications, the resistance to high PV loads is particularly remarkable.

A comparison between TECAPEEK natural (unfilled PEEK) and TECAPEEK PVX black (PEEK bearing) also shows the differences relative to the coefficient of friction, depending on the number of cycles and different sliding speeds. The tests were carried out on a steel shaft Ø 4mm, at sliding speeds of 0-22 mm/s and a load of 30 N. 
PEEK PVX also offers outstanding tribological performance properties when used with non-metallic mating partners. At the same time, excellent chemical resistance is maintained. It can be used dry or with the application of an external lubricant.
This PEEK bearing modification, TECAPEEK PVX black, was developed for use under high loads and speeds in harsh environments and can also be operated under continuous exposure to hot water or steam.

As with all Ensinger PEEK materials, we can confirm that our bearing grade TECAPEEK PVX black meets the limitations imposed by RoHS Directive 2011/65/EU Restriction of Hazardous Substances in electrical and electronic equipment.

Compliances

Facts

Chemical designation
PEEK (Polyetheretherketone)
Color
black
Density
1,46 g/cm3

Main Features

  • good heat deflection temperature
  • high creep resistance
  • good slide and wear properties
  • hydrolysis and superheated steam resistant
  • inherent flame resistance
  • excellent chemical resistance

Target industries

Technical details


  • product-technical-detail-collapse-item-0-lvl-1
    Mechanical properties Value Unit Condition Test Method
    Tensile strength at yield 11,000 psi @ 73 °F ASTM D 638
    Elongation at break (tensile test) 2.5 % @ 73 °F ASTM D 638
    Flexural strength 18,000 psi @ 73 °F ASTM D 790
    Modulus of elasticity
    (flexural test)
    700,000 psi @ 73 °F ASTM D 790
    Modulus of elasticity
    (tensile test)
    800,000 psi @ 73 °F ASTM D 638
    Compression strength 16,500 psi @ 10% strain, 73 °F ASTM D 695
    Impact strength (Izod) 0.90 ftlbsin @ 73 °F ASTM D 256
    Rockwell hardness 95 - M Scale ASTM D 785
    Wear rate 10 *10^-10 in^3 - min/f @ 68 °F ASTM D 3702
    Coefficient of friction 0.18 - @ 68 °F ASTM D 3702
    Compression modulus 330,000 psi @ 73 °F ASTM D 695
    Coefficient of friction 0.20 - @ 68 °F ASTM D 3702
    Rockwell hardness 119 - R Scale ASTM D 785
  • product-technical-detail-collapse-item-1-lvl-1
    Thermal properties Value Unit Condition Test Method
    Deflection temperature 530 F @264 psi ASTM D 648
    Service temperature 500 F Max Continous Use -
    Melting temperature 633 F -
    Thermal expansion (CLTE) 3.11 *10^-5 in/in / degre ASTM D 696
    Service temperature 572 F short term -
    Thermal conductivity 5.69 BTU-in/hr-ft^2 - deg -
  • product-technical-detail-collapse-item-2-lvl-1
    Electrical properties Value Unit Condition Test Method
    surface resistivity 1.4*105 Ohm/square ASTM D 257
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Condition Test Method
    Flammability (UL94) V0 - -
    Moisture absorption 0.02 % @ 24 hrs, 73 °F ASTM D 570
    Moisture absorption 0.03 % @ saturation, 73 °F ASTM D 570
    Limiting PV 500000 - @ 68 °F ASTM D 3702

Stock program