Properties of Polyurethane (PUR)

Polyurethane is a versatile polymer composed of organic units linked by urethane links. It is a type of plastic that can be rigid or flexible, and it has a wide range of applications. Polyurethane is known for its durability, chemical resistance, and flexibility, making it suitable for use in various products such as foam insulation, adhesives, sealants, coatings, elastomers, and foams.

The following table provides a comprehensive list of polyurethane (PUR) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).

Click on the icon to switch between Metric and Imperial units.

Table of Polyurethane Properties
Physical Properties
Metric
CategoryThermoset
Density1050 - 1250 kg/m3
Water Absorption1 %wt/day
Mechanical PropertiesMetric
Ultimate Tensile Strength29 - 49 MPa
Elongation at Break10 - 21%
Thermal PropertiesMetric
Thermal Conductivity0.21 W/m·K
Specific Heat Capacity (Cp)1800 J/kg·K
Coefficient of Thermal Expansion (αL)10-4 - 2×10-4 1/°C
Electrical PropertiesMetric
Electrical Resistivity1012 Ω·cm

Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)

Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) A.M. Howatson, P.G. Lun, J.D. Todd, P.D. Engineering Tables and Data. United Kingdom: University of Oxford, Department of Engineering Science, 2009.