OpenLegislation

Division 4.7 Resistance to dry-heat test

Original text. Later amendments are not shown.

The test shall be carried out in compliance with ISO 188. The test piece shall be exposed to air at a temperature equal to the maximum operating temperature for 168 hours. The change in tensile strength shall not exceed + 25 per cent. The change in ultimate elongation shall not exceed the following values:

  • maximum increase 10 per cent,

  • maximum decrease 30 per cent.