Definition of plastic flame retardant grades V-0, V-1, V-2 and HB
The flame retardant grade of plastic decreases from V-0, V-1, V-2 to HB: V-0: The flame was extinguished within 30 seconds after two 10-second burn tests on the sample. No burning objects should fall. V-1: After the sample was subjected to two 10-second burn tests, the flame was extinguished within 60 seconds. No burning objects…
