DIN EN ISO 1798 (accredited)

Our testing lab performs testing in accordance with DIN EN ISO 1798 (determination of tensile strength and elongation at break of flexible cellular polymeric foams) competently in an accredited procedure.

This test method is used to determine the mechanical strength and deformation properties of foams, which are subjected to uniaxial tension to evaluate their tensile strength and elongation at break. This allows key quality characteristics such as elasticity, long-term load-bearing capacity, and material uniformity to be assessed precisely.

For testing, specimens with defined dimensions are prepared from the foam. In materials with a preferred cell orientation, the longitudinal axis of the specimens is aligned perpendicular to the cell direction. The specimens are clamped in a tensile testing machine operating at a constant speed of (500 ± 50) mm/min. During the test, the applied force and the specimen elongation are recorded continuously. From these measurements, the tensile strength (in kPa) and the elongation at break (in %) are calculated, with the standard providing detailed specifications for gauge length, cross-sectional area, tolerances, and conditioning.

Testing according to DIN EN ISO 1798 in our accredited laboratory provides a reliable assessment of the mechanical load-bearing capacity and elasticity of flexible foams. The results supply important parameters for applications in upholstered furniture (e.g., polyether foam according to RAL-GZ 430), mattresses, technical insulation, seals, and automotive interiors (e.g., BMW TL 7120810.6, Mercedes-Benz DBL 5460 energy-absorbing foams).