welding rod 63/37 ItemSpecificationsSpecific gravity7.3Melting point183Freezing pointPackage weight0.5±0.05Kg/PCS, package unit 50pc/box (box size: 32*21*3cm)UsageSuitable for use with standard wave soldering/solder postsRegulation216BStorage information and warrantee periodStore in a cool, dry, non-corrosive environment. Product warrantee period of one yearshemical composition of solder alloyMetal elementSnPbComposition(%)Blance37.2Maximum threshold of impurities in solder alloyMetal elementAgBiZnFeAlAsCuCdSbSComposition(%)0.070.0550.00070.010.00070.0170.00370.00080.0890.006Notes: This product and all components are compliant with RoHsProduct Specifications:Flux NameRMARAChl or inity<0.10.1 0.5Copper Plate Corrosionno corrosion occurredno corrosion occurredInsulating Resistivitymore than 1x1011Ωmore than 1x1010ΩExpansionmore than 80%more than 80%