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Polyurethane Rubber (AU, EU)

AU is a thermoset elastomer or rubber material. It has the highest tensile strength and a fairly high ductility among rubber materials. The graph bars on the material properties cards below compare AU to other rubber materials (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elongation at Break

580 %

Tensile Strength: Ultimate (UTS)

39 MPa 5.6 x 103 psi

Thermal Properties

Glass Transition Temperature

-50 °C -58 °F

Maximum Temperature: Autoignition

360 °C 670 °F

Maximum Temperature: Decomposition

330 °C 620 °F

Maximum Temperature: Mechanical

90 °C 190 °F

Specific Heat Capacity

1760 J/kg-K 0.42 BTU/lb-°F

Thermal Conductivity

0.19 W/m-K 0.11 BTU/h-ft-°F

Followup Questions

Further Reading

Polyurethane Elastomers: From Morphology to Mechanical Aspects, Cristina Prisacariu, 2011

Polyurethanes: Science, Technology, Markets, and Trends, Mark F. Sonnenschein, 2015

Rubber Formulary, The, Peter A. Ciullo and Norman Hewitt, 1999