Array Solders fabricates its solder and brazing preforms from both high and low temperature alloys.
Restriction of Hazardous Substances (RoHS)/Lead Free Alloys
In compliance to the European Union’s initiative limiting hazardous materials such as lead, Array Solders offers its products in lead free alloys.
A number of soldering applications can accommodate lead free (RoHS) alloys. The right alternative can produce a much improved, cost efficient and more importantly, safe product. A common lead free alloy is 96.5sn/3.5ag/.5cu which is also referred to as SAC 305.
Soft Solder Alloys
Soft solder alloys are filler metals that melt and reflow below 840F and are used for low temperature applications. They are available is solid wire, cored wires with a rosin or acid flux. Soft solders are available in tin, lead, silver, copper, antimony and various other compositions that can be fabricated into wire, strip, paste, powder or preforms.
Brazing is essentially a high-temperature form of soldering that, when properly done, provides extremely strong, leak-tight, corrosion resistant joints. Most of the common (and easy to use) brazing alloys contain silver and the amount of silver in the alloy can affect how that material melts and flows. When brazing (and soldering), the metals being joined are not melted, but a filler metal is used to bond the materials being joined. A separate flux is sometimes necessary to help maintain a clean, oxide-free joint surface.
(Link to pdf file of temp chart)