SilverAlloy A-40T


INTRODUCTION

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.

APPLICATIONS

Aufhauser SilverAlloy A-40T is used for joining steel, copper and copper alloys with close joint clearances.

GENERAL INFORMATION

Chemical Composition
Silver Copper Zinc Tin
39.0-41.0 29.0-31.0 26.0-30.0 1.5-2.5

ADDITIONAL INFORMATION

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
Solidus 1200°F (649°C)
Liquidus 1310°F (710°C)
Brazing Range 1310-1550°F (710-843°C)
Specific Gravity 9.03
Density 4.76 TO/Cu.In
Electrical Conductivity 18.0 %IACS
Electrical Resistivity 9.60 μohm-cm
Color Light Yellow
 
SPECIFICATIONS MEET or EXCEED
AWS A5.8 BAg-28
ISO 3677: B Ag 40 Cu Zn Sn 640-680
UNS P07401
DIN 8513 L-Ag40 Sn
 
AVAILABLE FORMS
Powder/Paste
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
 

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    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com

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