Product Name: Tri-metal Silver Contact for The Relay Model NO.: tri-metal silver contact2 Certification: CCC, RoHS, ISO, CE Contact Mode: Fixed Contact Materials: AgCdO Trademark: YUZHANG Transport Package: Carton Specification: any Origin: Shanghai HS Code: 8538900000 Product Description Tri-metal Electrical Contacts: AgCuAg,FAgCuFAg ,AgNiCuAgNi ,AgSnO2Cu AgSnO2 AgSn02In03Cu AgSn02In03,AgCuCu AgCu,AgZn0Cu AgZn0,AgCd0Cu AgCd0,etc. The bottom weldable layer from a material with higher electrical resistivity such as steel,nickel or copper-nickel alloy.To improve the Welding process,the underside often have an embossed pattern with 5 to 7 weld projections. widely used in micro switches,thermostat,keys and breakers protector. Tri-metal Contact has contact surface materials as Silver ,Fine Silver ,AgNi,AgInSnO2, AgCu,gZnO,AgCdO etc. Its base material as CuNi,Fe,FagCuFe,AgNiCuFe,AgSnO2CuFe,AgCdOCuFe,etc.Its characteristic as follows: 1. Tri-metal contact has a contact surface as Fe material ,with small convexes to increase welding. It helps the welding stability of contact with bi metal sheet and stainless steel sheet base materials etc.2. Welding position is bonded by melting metals. Its electrical stability is much better than riveting contact with its perfect image and position ,If riveting ,may commonly distort bi metal in too lose welding .Later it influences temperature meter with data deviation . 3. By comparison with Welding Contact ,it has short heat time and clean environment .It is available for mini part producing ,especially for mini system .