Silver Filled Wire - 20 Gauge Dead Soft Round - 0.5oz (9.38ft) by Beadsmith Silver-Filled Wire is 6% fine silver bonded to a brass core. Dead Soft Temper. Round Wire. 20 gauge (0.032in, 0.8mm) 0.5oz spool, about 9.38ft Silver-Filled wire has the same charateristics as sterling silver. Wrap it - Link it - Solder it - Embellish with it