Silver Alloy Soldering Rods Ideal for soldering non-precious and gold filled jewellery. Silver alloy rods have flux core eliminating the need for additional flux or cleaning agents. 6" long x 1/32" diameter solder rods provide a strong, permanent bond with a gold-tone finish. Each rod contains .129 dwt. of silver. Melting temperature 1275°F (691°C). Available in packages of 4 rods or 12 rods.