Influence of heat-treatment on microstructure and properties of 316L stainless steel woven meshes

316L stainless steel woven meshes were annealed at 1 080℃ and 1 350℃，and the microstructures，mechanical properties and fracture modes were studied compared with that of 316L stainless steel woven meshes without heat treatment．The results show that the grain size becomes larger obviously after annealing treatment，fusion welding phenomenon occurs at contact points of the wires，the yield and tensile strength decreases greatly while the ductility increases，and the macroscopic fracture mode changes from normal to shear fracture．