Some customers have asked us for information regarding a test on flame resistant fabrics that quantifies the time taken for a flame to penetrate through a fabric.
The convective heat test is the time for the heat of a flame to penetrate and raise the temperature behind the fabric by 24 degrees. (i.e. burn you) and this is measured according to 3 levels of B1, B2 and B3. Please refer to our document on Convective and Radiant Heat for further information.
There are additional test methods where you can expose a fabric to a flame and determine the time to ignite (e.g. ISO 6940). This test uses the same burner set-up as for the A1 test in 11612 but you determine the time it takes to ignite the fabric. Although not in the method you could also make observations as time to hole.
If you require further information, please do not hesitate to contact our Sales Office.Back