Magnesium Alloys Selection

Joining Magnesium Alloys with AUFHAUSER AZ92A Filler Metals

JOINING CAST TO CAST ALLOYS
Cast Alloys AZ63A AZ81A AZ91E AZ92A EZ33A HK31A HK32A K1A QE22A
AZ63A YES -- -- -- -- -- -- -- --
AZ81A -- YES -- -- -- -- -- -- --
AZ91E -- YES YES -- -- -- -- -- --
AZ92A -- YES YES YES -- -- -- -- --
AZ33A -- YES YES YES -- -- -- -- --
HK31A -- YES YES YES -- -- -- -- --
HK32A -- YES YES YES -- -- -- -- --
K1A -- YES YES YES YES YES YES -- --
QE22A -- YES YES YES -- -- -- YES --
ZE41A -- YES YES YES YES YES YES YES YES

YES: Above combinations may be joined with AZ92A.
--: Above combinations may not be joined with AZ92A.

 


 

Joining Cast to Wrought Alloys with AUFHAUSER AZ61A and AZ92A Filler Metals

JOINING CAST TO CAST ALLOYS
Cast Alloys AZ31A AZ61A AZ80A HK31A HM21A HM31A
AZ81A YES YES YES YES YES YES
AZ91E YES YES YES YES YES YES
AZ92A YES YES YES YES YES YES
AZ33A YES YES YES -- -- --
HK31A YES YES YES -- -- --
HK32A YES YES YES -- -- --
K1A YES YES YES YES YES YES
QE22A YES YES YES -- -- --
ZE41A YES YES YES YES YES YES

YES: Above combinations may be joined with AZ61A or AZ92A.
--: Above combinations may not be joined with AZ61A or AZ92A.

 


 

Joining Wrought Alloys with AUFHAUSER AZ61A and AZ92A Filler Metals

JOINING CAST TO CAST ALLOYS
Cast Alloys AZ31A AZ61A AZ80A
AZ31B YES -- --
AZ61A YES YES --
AZ80A YES YES YES
HK31A YES YES YES
HK21A YES YES YES
HM31A YES YES YES

YES: Above combinations may be joined with AZ61A or AZ92A.
--: Above combinations may not be joined with AZ61A or AZ92A.


SHIELDING GAS CONSIDERATIONS

GTAW (TIG) - Manual AC welding. Argon gas gives good stability. For heavier sections add helium for increased arc penetration. Helium requires higher gas flow rates.

GMAW (MIG) - Spray Transfer. Argon gas gives excellent cleaning action. May add helium to aid filler metal flow and for deeper arc penetration. Don't use pure helium.

NOTE: If oxyacetylene is used, employ a neutral or slightly reducing flame and Aufhauser Flux900. Remove flux residue with hot water.

 


 

Typical Variable Settings for Gas Metal Arc Welding of Magnesium

Material Thickness Use Gas Cup I.D. Wire Diameter Current Voltage* Wire Feed Speed Argon Flow
in. mm in. in. mm amps volts IPM mm/s CFH LPM
0.062 1.6 Square Groove or Fillet 0.062 1.6 70 16 160 68 50 24
0.090 2.3 Square Groove or Fillet 0.062 1.6 105 17 245 104 50 24
0.125 3.2 Square Groove or Fillet 0.062 1.6 125 18 290 123 50 24
0.250 6.4 Square Groove or Fillet 0.062 1.6 265 25 600 254 60 28
0.375 9.5 Square Groove or Fillet 0.094 2.4 335 26 370 157 60 28

* Direct current electrode positive