Now that the northern hemisphere has entered winter, temperatures have generally fallen. Due to the low temperature, many metal products are easily brittle and cracked. Casters are widely used in our lives. Most of the parts and even the entire casters use metal. If the production is not handled properly, the metal parts of the casters will also be damaged. Many fracture accidents occur at low temperatures, especially with steel brackets for casters. This is because temperature has a great influence on the properties of widely used steel and cast iron. As the temperature decreases, the yield strength of steel increases and the toughness decreases. The existence of brittle transition temperature of body-centered cubic metal is one of its brittleness characteristics. As the temperature decreases, the fracture form of the notched impact specimen changes from ductile to brittle fracture within a certain temperature range. This type of fracture transition is usually expressed by a specific transition temperature, which is of a certain significance The above characterizes the material's ability to resist low temperature brittle fracture. This phenomenon that the material changes from toughness to brittleness with decreasing temperature is called low temperature brittleness or cold brittleness, and the temperature at which brittleness transition occurs is called brittle transition temperature. We-YLcaster, is a company specializing in the design, production and sales of casters, likeheavy duty industrial casters, low profile furniture casters, medical wheels castersetc. We will use professional knowledge and experience to select the metal materials required for the manufacture of casters, choose a scientific and reasonable treatment method, and provide products of reliable quality that are not affected by low temperature, which will make customers comfortable.