Leather – Physical and mechanical tests – Determination of dimensional change
Material
Our test laboratory performs accredited testing according to DIN EN ISO 17130 for the determination of the dimensional stability of leather. Dimensional stability describes the change in geometric dimensions of leather under defined loading or climatic conditions. Dimensional changes may be influenced by moisture absorption, temperature variations, or material-related relaxation effects.
Test Procedure
In the DIN EN ISO 17130 test, specimens with reference markings are prepared and conditioned or exposed to climatic stress under standardized conditions. Defined measurement distances are determined before and after testing, and the percentage dimensional change is calculated. Fibre direction and specimen orientation must be considered, since leather may exhibit anisotropic properties.
The test is applied, among others, to automotive leather, upholstery leather, and leather for interior applications. In the automotive sector, this includes seat covers or covered interior components where dimensional changes may influence processing or fit.