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