Stress-strain behavior is at the core of any application development. This tool predicts the stress-strain curve of our grades for any given temperature and humidity. Always the right conditions for your application!

User input:

  • Grade selection
  • Temperature of application
  • Relative humidity of application

Tool output:

  • Prediction of the stress-strain curve at the selected condition
  • Value of Tensile Modulus at the selected condition
  • Value of Stress-at-break at the selected condition
  • Value of Strain-at-break at the selected condition
Schematic Stress-Strain
  • All measurements are performed according to the ISO 527 1A standard for specimen (see image) with nominal specimen thickness of 4.0 mm (0.16 in), produced by injection molding.
  • For grades containing fillers like glass fibers, it is known that the fibers have a preference to orient along the longitudinal axis of the tensile bar, which has a large effect on the stiffness and strength values of the stress-strain response.
Dimensions tensile bar according to the ISO 527 1A standard
  • The model is based on almost 1000 physical experiments covering a wide range of temperature, relative humidity and grade composition.
  • The phenomenological model is a combination of an extensive theoretical framework describing mechanical compound behavior and a statistical approach.

Accuracy

  • On average, the standard deviation is around 5-10%. 
  • Currently, we do not provide predictions below -35°C (-31°F), above 200°C (392°F) or above 50% relative humidity. 
  • Please mind that near these boundaries as well as around the glass transition temperature Tg the prediction may be significantly less accurate.

Please use the Hotjar feedback form on the bottom right of the Stress-Strain tool page to submit your comments, questions and feedback. Most frequent questions will be answered in this section.

Why can't I select all DSM grades?

We're in the process of expanding this tool to more grades, but this depends on the availability of experimental data as well as on the demand for that particular grade. Let us know what grades you're looking for by filling in the feedback form on the bottom right of the page!

Why am I not allowed to export the data from the graph?

Everyone can use the download functionality once logged in; simply register (for free) and inmediately start downloading.