This test is suitable for materials that don't melt or shrink.
The test specimen is mounted on a vertical support frame. A small denatured alcohol flame is used as an ignition source. Either the highest reach point of the flame during the test, or the time for the flame to reach a marked point is determined. The speed factor, spread factor, heat factor and flammability index are calculated.
Based on the flammability index, the material passes or fails the requirements.
