Polyurethane temperature range
One of the many common questions we often get from our customers is “What temperature range can polyurethane withstand?” This question also leaves many people wondering.
Generally, polyurethane can be used in the temperature range of -80°F to 200°F (-62°C to 93°C). Special formulations extend the properties of polyurethanes to temperatures up to 300°F (150°C). Outside of these temperatures, polyurethane will weaken or degrade over time.
We test dynamic performance at high temperature with the most standard polyurethane formulations.
The dynamic properties of polyurethanes degrade significantly at temperatures above 200°F (93°C) and very special polyurethane formulations provide performance at temperatures up to (300°F) 150°C. Also, the performance degradation due to temperatures as high as 200°F (93°C) is almost fully reversible after a period of time once the temperature falls into the normal range. The exact value depends on the polyurethane formulation.
The following conditions will irreversibly degrade polyurethane and should be avoided:
1. Short-term exposure to temperatures above 350°F (180°C)
2.Long-term exposure to humidity above 158°F (70°C)
3. exposure to steam
We test dynamic performance at low temperatures with the most standard polyurethane formulations.
Long-term service temperatures below -0°F can stiffen the polyurethane, changing the material’s physical properties. Temperatures below -80°F can make the material brittle and therefore increase the likelihood of tearing and/or tearing. The exact value depends on the polyurethane formulation.
Another aspect is physics, which cannot be avoided. Polyurethane expands (or contracts) depending on the ambient temperature, and it expands roughly the same amount as rubber, about 10 times as much as steel. Polyurethanes typically have a linear coefficient of thermal expansion of 0.8 x 10-4 to 1.4 x 10-4 in/in/°F (1.4 x 10-4 to 2.5 x 10-4 mm/mm/°C ).
We have a wide variety of polyurethane formulations to meet the most demanding applications, from an almost endless array of physical properties including dual durometer, conductive, flame retardant and/or abrasion resistant properties – we can change the formulation!