HOW ARE SILVER BRAZING ALLOYS COMPETITIVE ?
A.- Basically because they offer a unique combination of low melting point, excellent fluidity and capillary flow when molten joints of high strength and ductility are obtained with a minimal alloy usage. The operating temperatures are around 200 C lower than those of the non-silver bearing brazing alloys, resulting in significant reduction of the brazing cycle, restricting oxidation and limiting distortion. They are also of particular importance when heat-sensitive materials are to be joined. The silver brazing process is extremely flexible; almost any form of heating can be used to produce joints on a wide variety of parent metals. A further important feature is their ability to form thin neat fillets requiring very little post-brazing cleaning. The combination of great strength without sacrificing ductility, coupled with low melting points and the wide range of material which can be joined, has brought silver brazing alloys into ever increasing use.
