Ertalyte™ Sterra™ PET-P is an unreinforced, semi-crystalline PET-P that is characterized by its excellent wear resistance, low coefficient of friction, high strength and resistance to moderately acidic solutions. Ertalyte™ Sterra™ PET-P is capable of sustaining high loads and retains more of its original strength up to 85°C (180°F) than nylons or acetals. Due to these characteristics, Ertalyte™ Sterra™ PET-P components are a favored solution for bearing and structural applications throughout the pharmaceutical, food processing & packaging and oil & gas industries.
As part of the Sterra™ product portfolio, Ertalyte™ Sterra™ contains recycled PET-P and therefore is associated with a significantly lower carbon footprint compared to similar materials derived from non-recycled feedstocks. For details, please refer to the respective environmental datasheet.
PROPERTIES
Excellent wear resistance
Low coefficient of friction
High strength
Resistance to moderately acidic solutions
Sustains high loads
Better strength retention at 85°C (180°F) than nylons or acetals
Thermal Properties
Property
Value
Heat Deflection Temperature at 1.8MPa (264 psi) (ºC)
80
Continuous allowable service temperature in air
100
Mechanical Properties
Property
Value
Tensile Strength (MPa)
90
Tensile Modulus of Elasticity (MPa)
3,500
Compressive stress at 1% nominal strain (MPa)
33
Compressive stress at 2% nominal strain (MPa)
64
Compressive stress at 5% nominal strain (MPa)
107
Flexural Strength (MPa)
135
Charpy Impact Notched (kJ/m²)
2.0
Chemical Properties
Property
Value
Hot Water / Steam
Limited
Acids, Weak
Acceptable
Acids, Strong (pH 1-3)
Limited
Alkalies, Weak
Limited
Alkalies, Strong (pH 11-14)
Not acceptable
Hydrocarbons - Aromatic
Acceptable
Hydrocarbons - Aliphatic
Acceptable
Ketones, Esters
Acceptable
Chlorinated Solvents
Limited
Alcohols
Limited
Inorganic Salt Solutions
Acceptable
Electrical Properties
Property
Value
Dielectric Strength (kV/mm)
22
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)
HB
Medical use
RECYCLED - Statera™ portfolio
Miscellaneous Properties
Property
Value
Base Material
PET
Brand Family
Colors
Black
Density (g/cm3)
1.39
Water Absorption after 24 hrs immersion in water (%)
