C521 Phosphor Bronze C Electrode


INTRODUCTION

Aufhauser Phosphor Bronze C Electrode has a higher tin content than the PhosBronze-A (EC518), resulting in weld metals of higher hardness, tensile and yield strengths. The weld deposits is ductile, strong and machinable as well as resistant to salt water corrosion. Post-weld heat treatment is desirable for maximum ductility, especially if the weld metal is cold worked. The Phosphor Bronze C provides a good color match to bronze and will work-harden.

APPLICATIONS

  • Joining base metals of similar composition: copper tin bronzes (Cu-Sn 6-8%), some brasses (Cu-Zn)
  • Repairing wrought bronzes (Cu-Sn) and surfacing on brasses, steels, and cast iron
  • Naval constructions and installations for sea water desalination, repair works

GENERAL INFORMATION

Chemical Composition
Copper Tin Iron Lead Phosphorus Aluminum Other*
Remainder 7.0-9.0 0.25 0.02 0.05-0.35 0.01 0.50

* Total other includes Zinc, Manganese, Silicon, Nickel = 0.50%

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
Machinability Excellent
Color Bronze
Current Used DC Reverse (electrode +)
Position(s): All
Tensile Strength 65,000 psi, max.
Elongation in 2" 45-50%
Brinell Hardness 85-100
 
SPECIFICATIONS MEET OR EXCEED
AWS A5.6 Class ECuSn-C
ASME SFA 5.6 ECuSn-C
MIL-E-23765/3 (MIL-CuSn-C)

 

STANDARD SIZES AND DIAMETERS
Diameters Lengths Amperage
3/32 12" 70-90
1/8 14" 90-110
5/32 14" 110-130
3/16 14" 110-130

 

COMMON BASE METALS
UNS DIN
C 50700 CuSn2
C 51100 CuSn4
C 51900 CuSn6
C 52100 CuSn8
  CuSn6Zn
C 52400 G-CuSn10

 

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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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