Filters Discs also named wire mesh circles, screen packs,  is made of all kinds of wire mesh, been cut and desired into different shape and sizes.

Inconel Wire Mesh

The Inconel alloys, based on nickel and chromium, have exceptionally broad usefulness. The alloys provide resistance to reducing and oxidizing corrosive solutions, and to high-temperature deterioration while displaying excellent creep-rupture properties. The addition of various elements to the basic nickel-chromium system enhances specific strength or corrosion resistance properties.

Copper wire mesh is make of copper wire

Type:  brass wire mesh, phosphorous bronze wire mesh (PB wire mesh) red copper wire mesh