The performance of phosphor copper shrapnel and stainless steel shrapnel can be distinguished by the differences of conductivity, hardness, fatigue resistance, welding and oxidation of shrapnel. According to the application, the material characteristics should be selected to determine the appropriate material.
The conductivity of phosphor bronze is much higher than that of stainless steel, and its high temperature resistance is also good. The hardness of phosphor bronze is similar to that of stainless steel. Generally, stainless steel is between 350-400, and phosphor copper can reach 330-370 degrees. Therefore, phosphor copper is often used for switch socket spring piece or conductive connecting piece, which may cause local high temperature due to arcing at the moment of switching.
Stainless steel shrapnel, surface brightness is better, without electroplating, and the price is less than one-third of phosphor copper material, often used in some non-conductive properties of the original. Therefore, when the demand for electrical conductivity and high temperature resistance is not very strong, continuous steel can be selected. In general, the service life, reliability, conductivity and temperature rise of phosphor bronze shrapnel are better than those of stainless steel. However, the lower price of stainless steel shrapnel is its main advantage.
The performance difference between phosphor copper shrapnel and stainless steel shrapnel mainly lies in conductivity and high temperature resistance.