Stainless steel plate has a low elongation rate. The elastic modulus E is large and the hardening index is high. The deep drawing cracking of stainless steel plates sometimes occurs after the deep drawing deformation, and sometimes occurs immediately when the deep drawn part exits the die; Sometimes impact or vibration occurs after deep drawing deformation; Sometimes stored or used for a period of time after deep drawing deformation.

In order to better meet the increasingly stringent National V emission standards for motor vehicles and users' demands for product quality and aesthetics, the raw materials for automotive exhaust systems are advancing towards lighter weight, longer service life, heat resistance to air oxidation, and corrosion resistance. More demands have been put forward for the performance of exhaust system steel.

Stainless steel pipe is a type of hollow long round steel mainly used for industrial pipelines and mechanical structural components in industries such as petroleum, chemical, medical, food, light industry, and mechanical instruments. In addition, when the bending and torsional strength are the same, it is lighter in weight and therefore widely used in the manufacturing of mechanical components and engineering structures. It is also commonly used in furniture, kitchen utensils, etc.

With the development of society, people have realized the need to establish stricter exhaust emission standards to protect the environment and reduce fuel consumption. Due to the excellent corrosion resistance, heat resistance, and comprehensive performance of stainless steel plates, the materials for exhaust emission systems have evolved from ordinary cast metals and aluminum coated carbon steel plates to stainless steel plates, and further developed from general characteristic stainless steel plates to high-performance special stainless steel plates.

Motorcycles use mufflers to reduce the noise generated during high-temperature and high-pressure exhaust emissions to the allowable limit, so mufflers cannot be ignored and need to be maintained.

National III motorcycle mufflers are equipped with metal catalysts. If unburned natural materials enter the muffler and accumulate in the metal catalyst honeycomb, they will be ignited by exhaust gas, and the temperature will rise sharply. When the metal material honeycomb exceeds the allowable temperature (1200 ℃) of the metal material honeycomb, the metal material honeycomb falls off or melts.