... alloy Grade: W80Cu20, W75Cu25, W90Cu10 W92.5NiFe Verious specifications and shapes: boat, crucibles, funnels, Tungsten copper alloyGrade: W80Cu20, ... dies of cemented carbide and for making high speed steel and switches and contacts in high and low voltage electriacl devices ... tungsten crucibles, tungsten funnels, tungsten barrel, tungsten tubes and various kinds of special liquid- flow hole panel, etc ...