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Harris® 4043 Aluminum Silicon alloy is very commonly used to weld on 6XXX base materials and other heat treatable alloys. Harris® 4043 is a soft alloy, with good crack resistance and high penetration compared to other filler metals. It can be used for certain brazing applications and to weld on high silicon casts like A356. Welding of 5XXX base materials with 4043 and other 4XXX filler metals should be avoided.

Features

  • Designed for welding heat treatable base alloys, specifically 6XXX series alloys
  • Low sensitivity to weld cracking with the 6XXX series base alloys
  • Lower melting point and more fluidity than the 5XXX series filler alloys
  • Common choice for welding 6061
  • All-position welding
  • Gray color (post anodized)
  • Marked with model number on each end for easy identification after use
  • Often used for repair welding aluminum/silicon cast alloys such as grades 353/A356
  • Weight: 1.04 lbs
  • Mechanical Property - Tensile Strength: 27,000 psi (as welded 6061 base plate)
  • Mechanical Property - Yield Strength: 18,000 psi (as welded 6061 base plate)
  • Melting Point - Solidus: 1065 F (574 C)
  • Melting Point - Liquidus: 1170 F (632 C)
  • Density: 0.097 lbs/cu in
  • Alloy Type: 4043 Aluminum Silicon
  • Base Metal Compatibility: 6XXX series alloys, Aluminum/silicon cast alloys grades 353/A356
  • Welding Process: TIG (GTAW), MIG, STICK
  • Specification Compliance: ANSI/AWS A5.10 Class R/ER 4043, ASME SFA 5.10, AMS 4190
  • Welding Parameters - GMAW (MIG) Amps: 70-300 A (depending on wire diameter and metal thickness)
  • Welding Parameters - GMAW (MIG) Volts: 15-29 V (depending on wire diameter and metal thickness)
  • Welding Parameters - Argon Gas Flow: 25-50 cfh (depending on wire diameter and metal thickness)
  • Nominal Composition - Aluminum: Balance
  • Nominal Composition - Silicon: 4.5-6.0 %
  • Nominal Composition - Copper: 0.30 % max
  • Nominal Composition - Titanium: 0.20 % max
  • Nominal Composition - Magnesium: 0.05 % max
  • Nominal Composition - Manganese: 0.05 % max
  • Nominal Composition - Zinc: 0.10 % max
  • Nominal Composition - Iron: 0.80 % max
  • Nominal Composition - Beryllium: 0.0003 % max
  • Nominal Composition - Others: Each 0.05 % max, Total 0.15 % max
  • Post Anodize Color: Gray

Downloads

    Spec Sheet