Both the 45-degree burning test and the vertical flammability test are test methods used to test the combustion performance of materials, but their test conditions and test purposes are different.
The 45-degree burning test refers to tilting the material at an angle of 45 degrees under certain test conditions, and then observing the burning of the material during the test to evaluate its fire performance. This test method is mainly used to evaluate the safety performance of building materials, wires and cables and other materials in fire accidents.
The vertical flammability test refers to placing the material vertically under certain test conditions, and then observing the burning of the material during the test to evaluate its flammability. This test method is mainly used to evaluate the flammability of plastic products, textiles and other materials.
Therefore, the main difference between these two test methods lies in the different test conditions and test purposes. The 45-degree burning test is mainly used to evaluate the fire performance of materials, while the vertical flammability test is mainly used to evaluate the flammability of materials.