C624 Aluminum Bronze A-3


INTRODUCTION

Aufhauser Aluminum Bronze A-3 contains a higher iron content than the C618 (Aluminum Bronze A-2). The higher iron content gives "A-3" greater strength, while maintaining good ductility.

APPLICATIONS

  • Overlaying pistons and depositing bearing surface applications.
  • Joining Aluminum Bronze castings of similar composition.

GENERAL INFORMATION

Chemical Composition
Copper Aluminum Iron Lead Silicon Zinc
Remainder 10.0-11.5 2.0-4.5 0.30 0.25 0.20

Note: Copper contains Silver

ADDITIONAL INFORMATION

Copper and its alloys require a relatively high heat input with shortened welding time. Higher preheat temperatures and faster welding rates than for steel are necessary.

PHYSICAL and MECHANICAL PROPERTIES
Melting Point 1900°F (1038°C)
Solidification 1880°F (1027°C)
Density at 68°F 0.269 lbs./in³
Electrical Conductivity at 68°F 12.0 %IACS
Thermal Conductivity at 68°F 34.0 Btu
Electrical Resistivity at 68°F 86.4 Ω-cmil/ft
Specific Gravity 7.45
Specific Heat Capacity at 68°F 0.09 Btu/lb/°F
Tensile Strength 65,000 psi, min.
Yield Strength 40 ksi
Elongation in 2" 14%
Brinell Hardness 140-180
 
SPECIFICATIONS MEET OR EXCEED
AWS A5.7 Class ERCuAl-A3

 

STANDARD SIZES AND DIAMETERS
Size Cast
(12" Spool)
Helix
(12" Spool)
3/32 or 1/8 x 36" rod N/A N/A
.035" dia. x 30 lb. spl 15-40" < 1"
.045" dia. x 30 lb. spl 15-40" < 1"
.062" dia. x 30 lb. spl 15-40" < 1"

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  • Address:
    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com

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