Petp - Materials - Technical

PETP - Polyethylene Terephthalate Polyester

SPB Products made from this material
Rod, Bushes

PETP - Polyethylene Terephthalate Polyester is a very hard and stiff material with little water absorption. Small Parts and Bearings supply Polyester under the Dotmar tradename ErtalyteTM

Properties of PETP

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 1.3-1.4
Surface Hardness Rockwell M 94-101
Tensile Strength MPa 80
Tensile Modulus GPa 2-4
Max Operating Temp. oC 115-170
Water Absorption % 0.1
Oxygen Index % 21
Flammability  : Self Extinguishing
Volume Resistivity ohm.cm >1014
Dielectric Strength kV.mm-1 17
Dissipation Factor @ 1kHz 0.002
Dielectric Constant @ 1kHz 3.0
Heat Deflection Temp. @ 0.45 MPa oC 115
Heat Deflection Temp. @ 1.80 MPa oC 80

Chemical Resistance
Chemical Resistance
Acids (Concentrated) Good
Acids (Dilute) Good
Alcohols Good
Alkalis Poor
Aromatic hydrocarbons Fair
Greases and Oils Good
Halogens Good
Ketones Good

Note! Property values are typical and should be used only as a guide to selection of materials and not as purchase specifications.


You can purchase online at Small Parts and Bearings Poyester Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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