The yield strength requirement for the use of packing wire is 1. The maximum stress in accordance with linear relationship on the proportional limit stress-strain curve, which is commonly used internationally σ P means more than σ P, the material is considered to yield.

2. The elastic limit specimen is loaded and then unloaded, and the maximum stress that the material can fully recover elastically without residual permanent deformation. Internationally, it is usually represented by ReL. When the stress exceeds ReL, the material is considered to yield.

3. The yield strength is based on the specified residual deformation. For example, the stress of 0.2% residual deformation is usually used as the yield strength, and the symbol is Rp0.2. Introduction to packing silk: It is mainly used for packaging waste materials of renewable resources, such as binding silk and special packing silk of cotton and hemp company, etc. Various types of special binding and packing silk are complete, including fully shaped coil silk and cut silk.