Ketron™ Sterra™ HPV PEEK shapes are carbon fiber-reinforced, with graphite and PTFE lubricants, giving them the lowest coefficient of friction and the best machinability of all PEEK materials. Due to Ketron™ Sterra™ HPV PEEK’s combination of low wear, low friction and high limiting pressure velocity, this material is often chosen as a solution for high speed service bearings, bushings, insulators, valves and seals.
As part of the Sterra™ product portfolio, Ketron™ Sterra™ HPV PEEK contains recycled content and therefore is associated with a significantly lower carbon footprint compared to similar materials derived from non-recycled feedstocks.
PROPERTIES
carbon fiber-reinforced with graphite and PTFE lubricants
Excellent wear resistance
High limiting pressure velocity (LPV)
High mechanical strength and stiffness
Low coefficient of friction (COF)
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
195
Continuous allowable service temperature in air
250
Mechanical Properties
Property
Value
Tensile Strength (MPa)
78
Tensile Modulus of Elasticity (MPa)
5,900
Compressive stress at 1% nominal strain (MPa)
46
Compressive stress at 2% nominal strain (MPa)
80
Compressive stress at 5% nominal strain (MPa)
120
Flexural Strength (MPa)
125
Charpy Impact Notched (kJ/m²)
3.0
Chemical Properties
Property
Value
Hot Water / Steam
Acceptable
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Limited
Alkalies, Weak
Acceptable
Alkalies, Strong (pH 11-14)
Acceptable
Hydrocarbons - Aromatic
Acceptable
Hydrocarbons - Aliphatic
Acceptable
Ketones, Esters
Acceptable
Chlorinated Solvents
Acceptable
Alcohols
Acceptable
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
Certification Properties
Property
Value
FDA
Not compliant
European Food Approval
Not compliant
NSF
Not compliant
3A-SSI
Not compliant
Canada AG
USDA
Not compliant
Flammability (UL Rating)
V-0
Medical use
RECYCLED - Statera™ portfolio
Miscellaneous Properties
Property
Value
Base Material
PEEK
Brand Family
Colors
Black
Density (g/cm3)
1.45
Water Absorption after 24 hrs immersion in water (%)
