Stainless materials have better performances in strength, toughness, thermal conductivity, and thermal expansion than the other steels. Many components in precise mechanisms and electronic products are selected as the favorite materials. However, the heat generated, work hardening, and chips adhesion in machining result in poor machinability. It is a hard machining materials. CMAT devote to various stainless fabrications many years having plenty machining experience in SUS403, 404, 420, 403. If you have any requirements, welcome to inquire.