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Polyurethane - Materials - Technical Information - Hobby and Engineering

Polyurethane (Urethane)

MBA Products made from this material
Pressure Roller Bearings (Coating on OD), Rod, Timing Belts

Polyurethane offers the elastic properties of rubber and the toughness of metal. It can be supplied in a variety of hardnesses and has excellent abrasion and tear resistance. Polyurethane is resistant to oil, but has poor resistance to acids.

Properties of Polyurethane

Physical Properties
PROPERTY UNIT VALUE
Density g/cm3 0.9
Surface Hardness   Varies
Tensile Strength MPa 4
Flexural Modulus GPa 0.01
Notched Izod kJ/m 1.06+
Linear Expansion per oC 0.00013
Elongation at Break % 120
Strain at Yield %  :
Max Operating Temp. oC 70
Water Absorption % 10
Oxygen Index % 24
Flammability UL94 HB
Volume Resistivity log ohm.cm 12
Dielectric Strength MV/m 16
Dissipation Factor @ 1kHz 0.003
Dielectric Constant @ 1kHz 4
Heat Deflection Temp. @ 0.45 MPa oC 20
Heat Deflection Temp. @ 1.80 MPa oC 20

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 Hobby & Engineering Supplies.

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Hobby and Engineering Supplies offers thousands of products including remote controlled cars, planes, boats, and helicopters. We stock spare parts for remote controlled models. Our range includes the popular Solarbotics solar model kits and spares. We also distribute the full range of miniature engineering products from Miniature Bearings Australia. This range includes small bearings, timing pulleys, timing belts, seals, o-rings, gears and more. Also available from our store in Capalaba Queensland are a full range of lubricants, adhesives, balsa wood and plastic rod and sheet materials. See our Online Catalogue for more information. Our main business is handled from our sales counter and showroom at 3239 Old Cleveland Road Capalaba West, Queensland, Australia, but we also sell by phone, fax, online and mail order. We also offer all of our hobby and engineering parts through our online store.

Using the links at the top of this page you will find extensive information including catalogues (Products and Store link), technical data, and other product specific information.

We also suggest that you may want to take a look at the technical information sites - Shafting Information, Couplings Information and Gearboxes Information.

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