Generally speaking, it is not possible to identify the chemical composition of a stainless steel by visual check. So, how to test if the stainless steel mesh is grade 304 ?

For testing the stainless steel mesh, we use a hand held analyser to confirm the chemical composition. This instrument is a non-destructive tester which has a 98.7% alloy grade identification accuracy. Please check the following pictures

We are also able to supply a mill certificate for your stainless steel wire & mesh, if required.