silver copper welding rod we are prfessional manufactory loand in Ning bo of China, professioanal in produce the : silver copperwelding rod of AWS BCuP-2; following is the compostion list for the Brazing welding wirefor Low silver: Specchemical ingredient%Temperature)Stretch%Longitudinal strengthkg/m2ProportionPAgSnZnCuCoagulationLiqueficationWelding temperatureBcuP-14.8-5.3-Rem705925710-930-958.0BcuP-24.8-5.3-Rem710795735-8458_926-308.0BCuP-35.8-6.74.7-6.3--Rem645815720-81510-1330-358.1BCuP-46.8-7.75.8-6.2--Rem645720690-790--8.1BCuP-54.8-5.314.5-15.5--Rem645800705-81510-1433-398.5BCuP-66.5-7.21.8-2.2--Rem645790730-81511-1320-258.0-8.0-8.6---Rem705780705-80512-1620-257.8-6.8-7.3-7.0-8.0-Rem620680640-70010-1427-318.1-7.3-7.85.8-6.37.0-8.0-Rem605645620-68018-2340-508.3 also, we have high silver content welding rod : Bag-18;bag-25B etc,differnt content of the silver brazing welding rod.