Lead free tin soldering wire and bar #1 YW07 Alloy Compostion: Sn: 99.3% Cu: 0.7% Feature: The metal composition are executed by 2.1 alloy components standard.The productis according to the hazardous substance control requirements of EU WEEE and RoHS (For details, please see Hazardous elements contents report by SGS) Use for: The specification is applicabale to the soldering of the electronics of relevant electronic elements. Use Direct (Suggestion for reference): It is suggested the remperature of the Tin furncace is 265 +- 5 Physical property Specific alloySolid phase tem. Liquid phase TemSpecific gravitySn99.3/Cu0.7 /Ni227 2287.32 Also, we have following different compostion lead free tin soldering wire:Product NameAlloy compostion (WT %)Use TempYW(B)05Sn: 99.5 Cu: 0.5227YW(B)07Sn: 99.3 Cu: 0.7227-229YW(B)30Sn: 97 Cu: 3227YW(B)100Sn: 99 Cu: 0.7 Sb:0.3227-229YW(B)110Sn: 99.5 Cu: 0.5 Ni:0.05227-230YW(B)120Sn: 95 Sb:5240-243YW(B)3500Sn: 96.5 Ag:3.5217-220YW(B)0307Sn: 99 Ag:0.3 Cu:0.7217-220YW(B)3508Sn: 95.7 Ag:3.5 Cu:0.8227-228YW(B)3005Sn: 96.5 Ag:3 Cu:0.5217-220 Above several of produts are the leading sales products of the our company,if the customers have specail request of it, we can customized upon customers wills.