The ASTM standard for flammability testing is ASTM E84, which is titled "Standard Test Method for Surface Burning Characteristics of Building Materials." This test method measures the flame spread and smoke development of various materials when exposed to a controlled ignition source. Its purpose is to assess the fire performance of materials used in building construction and other applications.
The ASTM E84 test involves mounting a sample of the material on a test apparatus and subjecting it to a controlled flame. The material's flame spread index (FSI) and smoke developed index (SDI) are determined based on its performance during the test. The lower the FSI and SDI values, the better the material's resistance to flame spread and smoke development.
ASTM E84 is widely used in the construction industry for evaluating the flammability of interior finishes, such as wall and ceiling materials. Compliance with this standard helps ensure that materials used in buildings meet certain safety requirements and can help prevent the rapid spread of fire.