SilverAlloy A-56T has the lowest brazing temperature, best wetting, and best flow of all the cadmium-free alloys. It has a slight plastic range which may be noticed during melting on some applications. Its low zinc content minimizes problems due to longer heating cycles (as in furnace brazing) or due to excessive heating (as by less skilled operators). For this reason, it is often preferred over SilverAlloy 35, SilverAlloy 45, or SilverAlloy 50 for furnace brazing, or any brazing operation where the alloy is molten for an extended period of time. The fact that SilverAlloy A-56T contains no cadmium has led to its use on food- or medical-grade equipment, where cadmium may be considered a hazard and its use is prohibited by law. Excellent replacement to cadmium-containing alloys when low melt temperature is required. Good corrosion properties. Color match to stainless.
Typical applications of SilverAlloy A-56T are the joining of ferrous, non-ferrous, and dissimilar metals, with close joint clearances. It is often selected for use on silver or stainless steel due to its excellent color match. SilverAlloy A-56T is often used also on nickel, nickel alloys, or stainless steel because it does not cause stress cracking as readily as the other low melting brazing filler metals.
GENERAL INFORMATIONChemical Composition
Operating temperature for SilverAlloy A-56T is up to 400°F in continuous service and up to 600°F in intermittent service. Where improved corrosion resistance is needed, SilverAlloy Cd-50Ni3 and SilverAlloy A-40Ni2 are recommended over silver base filler metals not containing nickel.
PHYSICAL and MECHANICAL PROPERTIES
|Electrical Conductivity||11.9 %IACS|
|Electrical Resistivity||14.5 μohm-cm|
SPECIFICATIONS MEET or EXCEED
|AWS A5.8 BAg-7|
|DIN 8513 LAg 55 Sn|
|ISO 3677: B Ag 56 Cu Zn Sn 620-650|
|BS 1845 Ag20|
|NFA 81-362, 56 A1|
StANDARD SIZES AND DIAMETERS
|Diameters: 1/32", 3/64", 1/16", 3/32", 1/8"|
|Sizes: 1, 3, 5, or 50 troy ounce|