Aluminum 4643


INTRODUCTION

A primary use for Aufhauser Aluminum 4643 is in the welding of heavy sections of certain aluminum alloys when multiple weld passes are used and dilution of the base metal into the puddle is negligible. Post weld solution heat treatment and artificial aging may develop 90% of the tensile strength of the unwelded base metal in alloys 6061, 6063, 6070, and 6071. This alloy could also offer advantages in brazing type applications on thin sections where dilution ratios are low. Welds made with AL4043 or AL4643 filler metal should have approximately equal performance in the as-welding condition. AL4643 is very similar in weldability to AL4043. The weld cracking characteristics, flow, pre-cleaning and machine settings are the same for this alloy as for AL4043. The corrosion resistance is very good and equals or exceeds AL4043 in the weld zone and heat affected regions.

 

APPLICATIONS

  • Welding filler wire

 

GENERAL INFORMATION

  • Non-Heat treatable
  • Principle alloying elements: Silicon, Magnesium

 

Chemical Composition
Silicon Iron Copper Beryllium Manganese Magnesium Zinc Titanium Each Total
Other
Aluminum
3.6-4.6 0.8 0.1 0.0008 0.05 0.10-0.30 0.10 0.15 0.05 0.15 Remainder

 

PHYSICAL and MECHANICAL PROPERTIES
Melting Range 1065-1175°F (574-635°C)
Density at 68°F 0.097 lbs./in³
Resistance to Corrosion B (Gen) A (SCC)
Anodize Color Gray
 
SPECIFICATIONS MEET OR EXCEED
ANSI/AWS A5.10 (ER & R 4643)
AMS 4189

 

STANDARD SIZES AND DIAMETERS
Diameters (inches) Package Form
.030, .035, 3/64, 1/16, 3/32, 1/8 4 & 12 in. Spools
1/16, 3/32, 1/8, 5/32, 3/16, 1/4 Straight lengths

 

TYPICAL GMAW PARAMETERS
Wire diameter Range Base material
thickness
Suggested Wire feed Gas flow Consumption
100 ft of weld
INCHES AMPS VOLTS INCHES AMPS VOLTS IPM CFH POUNDS
0.030 60-170 13-24 0.062 90 22 260 25 1.5
      0.094 110 23 320   1.8
      0.125 130 23 380   2
      0.187 150 24 430   4
      0.250 175 24 510   6
0.035 70-180 15-26 0.062 90 23 250 35 1.5
      0.125 130 24 360   2
      0.250 170 25 470   6
0.047 140-260 20-29 0.094 110 25 215 45 1.8
      0.125 150 26 290   2
      0.250 190 26 370   6
      0.375 220 27 430   16
0.062 190-350 25-30 0.250 200 26 190 55 6
      0.375 230 27 215   16
      0.500 260 28 240   30
      0.750 280 29 261   50
      1.000 300 30 280   105
0.094 280-400 26-31 0.500 280 28 170 65 30
      0.750 290 29 175   50
      >1.000 300 30 180   150+

NOTE: Parameters based on flat position, groove joint, backing strip, and 100% argon gas.

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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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