IT Silver Solder Sheets are extra hard and weighs 5 DWT. This silver solder is used for hard (torch) soldering only. The flow temperature of this solder is 1490F. IT Silver Solder contains silver (80%), copper (18%) and zinc (2%). This silver solder is Cadmium free.

This solder can reach a high flow point, so it is often referred to as an IT Solder for use on findings being enamel fired. If enamel comes into contact with this or any other zinc bearing solder, the enameling may bubble. This solder contains Zinc, so it is not an eutectic solder. Eutectic solders are used during enameling to avoid bubbling.