SILVER-COATED COMPOSITE MATERIAL FOR MOVABLE CONTACT COMPONENT, METHOD FOR PRODUCING SAME, AND MOVABLE CONTACT COMPONENT

{Problems} To provide a silver-coated composite material for movable contact parts, which is excellent in adhesiveness to plating even under repeated shear stress, which has a contact resistance value low and stable over a long time period, and which is improved in the service life when used in switches, and to provide a movable contact part using the same. {Means to solve} A silver-coated composite material for movable contact parts, which has: an underlying layer composed of any one of nickel, cobalt, a nickel alloy, and a cobalt alloy at least provided on a part of the surface of a stainless steel substrate; an intermediate layer composed of copper or a copper alloy provided thereon; and a silver or silver alloy layer provided thereon as an outermost layer, wherein a thickness of the intermediate layer is 0.05 to 0.3 µm, and wherein an average grain size of the silver or silver alloy provided as the outermost layer is 0.5 to 5.0 µm.