C518 Phosphor Bronze A


INTRODUCTION

Aufhauser Phosphor Bronze A is a copper-zinc bronze containing approximately 5% tin and up to 0.35% phosphorus added as a deoxidizer. Tin increases wear resistance of the weld metal and slows the rate of solidification by broadening the temperature differential between the liquidus and the solidus. This slower solidification increases the tendency to hot shortness. To minimize this effect, the weld pool should be kept small and welding time as short as possible. Phos-Bronze A can be used to weld bronze and brass. It can also be used to weld copper if the presence of tin in the weld metal is not objectionable. When gas tungsten arc welding with Phos-Bronze A, preheating is recommended. Welding is done in the flat position only.

APPLICATIONS

  • MIG and TIG welding of tin-bronze base metals such as 509 to 519 series.
  • Overlay welding of steel.

GENERAL INFORMATION

Chemical Composition
Copper Aluminum Iron Lead Phosphorus Tin
Remainder 0.01 0.25 0.02 0.10-0.35 4.0-6.0

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
Solidus 1750°F (954°C)
Liquidus 1920°F (1049°C)
Tensile Strength 35,000 psi, min.
Brinell Hardness 50-90 HB
Elongation in 2" 35%
Electrical Conductivity 15%
Electrical Resistivity 69.1 ohms
 
SPECIFICATIONS MEET or EXCEED
AWS A5.7 Class ERCuSn-A
ASME SFA5.7 Class ERCuSn-A
QQ-R-571C
MIL-R-1963B Type RCuSn-A
UNS W60518
 
STANDARD SIZES AND DIAMETERS
Size Cast
(12" Spool)
Helix
(12" Spool)
3/32 or 1/8 x 36" rod N/A N/A
0.030" dia. x 30 lb. spl 15-40" < 1"
0.035" dia. x 30 lb. spl 15-40" < 1"
0.045" dia. x 30 lb. spl 15-40" < 1"
0.062" dia. x 30 lb. spl 15-40" < 1"

 

TYPICAL USES FOR ALLOY C518
Product Category Product Reason Category Reason
Industrial Welding Wire Conductivity (Electrical) Electrical Conductivity
  Welding Wire Conductivity (Thermal) Thermal Conductivity
  Welding Wire Corrosion Resistance Oxidation Resistance
  Welding Wire Softening Resistance Resistance to Thermal Softening

 

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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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