GB/T 24218.5 - 2016 is the fifth part of the series of test methods for Spinning & weaving nonwovens, focusing on the determination of mechanical penetration resistance (steel ball bursting method). The standard specifies test equipment, such as special bursting testers, specifies the sample preparation process, describes the operation steps of bursting nonwovens samples with a specified diameter steel ball at a specific speed, and evaluates the mechanical penetration resistance performance through measurement of bursting force and other data. This method provides a unified standard for mass testing of nonwovens, enabling manufacturers to control the mass of products and meet their needs for mechanical protection performance in many fields such as protection and industry.