Aufhauser SilverAlloy A-40T is a good general all-purpose brazing alloy. It has a lower brazing temperature with a narrower melting range than other cadmium-free classifications with similar silver content. Often chosen for its superior wetting and flow characteristics, A-40T is suitable for torch brazing where heating may not be consistent. Also appropriate for pre-placement in the joint. It will not liquidate excessively if heated slowly.
Aufhauser SilverAlloy A-40T is used for joining steel, copper and copper alloys with close joint clearances.
GENERAL INFORMATIONChemical Composition
Generally, the joint strength using SilverAlloy A-40T will surpass the strengths of the base metals being joined, type of joint, design of joint, joint clearances and brazing procedures. The recommended maximum operating temperature for SilverAlloy A-40T is up to 400°F in continuous service and up to 600°F in intermittent service. Where improved corrosion resistance is needed, SilverAlloy A-50Ni2 and SilverAlloy A-40Ni2 are recommended over silver base filler metals not containing nickel.
PHYSICAL and MECHANICAL PROPERTIES
|Brazing Range||1310-1550°F (710-843°C)|
|Electrical Conductivity||18.0 %IACS|
|Electrical Resistivity||9.60 μohm-cm|
SPECIFICATIONS MEET or EXCEED
|AWS A5.8 BAg-28|
|ISO 3677: B Ag 40 Cu Zn Sn 640-680|
|DIN 8513 L-Ag40 Sn|
|Wire, Rods*, Foil|
|Specialty preforms per customer specifications|
*STANDARD SIZES AND DIAMETERS
|Diameters: 1/32", 3/64", 1/16", 3/32", 1/8"|
|Sizes: 1, 3, 5, or 50 troy ounces|
|Lengths: 18, 20, or 36 inches|