Aluminium

The most widely used alloy type for welding aluminum alloys. OK Autrod 5356 is a magnesium alloy aluminum wire for MIG welding of salt water resistant Al-Mg alloys containing up to 5%Mg, but was also used for its relatively high strength. Alloys of type 5XXX, which are welded with OK Autrod 5356 and give a weld metal with more than 3% Mg, can be sensitive to cracks caused by stress corrosion at a working temperature above 65°C. The alloy cannot be heat treated.
Shield gas:
Ar, Ar/He mixtures or He (I1-I3)
Power type:
DC+
Example of corresponding additive material:
TIG: OK Tigrod 18.15
Electrode class:
SFA/AWS A5.10: ER5356
EN ISO 18273: S Al 5356 (AlMg5Cr(A))
Typical values:
Composition of wire %:
Si: <0.25, Mn : 0.15, Mg: 5.0, Fe: <0.4, Al: Residue
Mechanical values ??of all-weld material:
Strength (Rp0.2): 120 MPa
Breaking strength (Rm): 265 MPa
Elongation (A5): 26%
Approvals:
ABS: ER 5356 for dim. 1.2 mm, CWB: AWS A5.10 (Item number ending with A), DB: 61.039.01, DNV: 5356 (WB), GL: S-AlMg 5, LR: WB/I-1, VdTÜV: 04664 , Ü: 61.039, CE: EN 13479

Silicon alloyed aluminum wire of type AlSi5 for TIG welding of AlMgSi and AlSi alloys with silicon contents up to 7%. The wire is recommended for e.g. EN-AW-6063 (SS4104), EN-AW-6082 (SS4212), EN-AW-42000 (SS4244), EN-AW-42100 (SS4245) and corresponding Al alloys according to other standards. The welding material has a high safety against cracks. Color matching between weld metal and base material during anodizing is less good. As with all aluminum welding, a high degree of discipline applies regarding cleanliness and minimization of oxide layers on joint surfaces and additive materials.
Example of corresponding additive materials:
MIG: OK Autrod 18.04
Electrode class :
SFA/AWS A5.10: R4043
EN ISO 18273: S Al 4043 (AlSi5)
EN ISO 18273: S Al 4043A (AlSi5(A))
Typical values ??of all-weld material:
Chemical composition %:
Si: 5.0, Mn: <0.05, Zn: <0.1, Fe: < 0.4, Al: Residual
Mechanical values:
Strength (Rp0.2): 55 MPa
Breaking strength (Rm): 165 MPa
Elongation (A5): 18%
Approvals:
CWB: AWS A5.10 (Item number ending with A), DB: 61.039.06, Ü: 61.039, CE: EN 13479

Magnesium alloyed aluminum wire for TIG welding of salt water resistant Al-Mg alloys containing up to 5% Mg. The welding wire is the most used type and intended for welding alloys corresponding to, for example, ENAW-5083 (SS 4140) where high strength of the weld joint is desired. Base material in the 5XXX series which together with OK Tigrod 5356 gives a weld metal with more than 3% Mg has good resistance to cracks caused by stress corrosion even where the operating temperature exceeds 65ºC. The alloy cannot be heat treated.
Example of corresponding additive material:
MIG: OK Autrod 18.15
Electrode class:
SFA/AWS A5.10: R5356
EN ISO 18273: S Al 5356 (AlMg5Cr(A))
Typical values ??of all-weld material:
Chemical composition %:
Si : <0.25, Mn: 0.15, Mg: 5.0, Fe: <0.4, Al: Residual
Mechanical values:
Strength (Rp0.2) : 120 MPa
Breaking strength (Rm): 265 MPa
Elongation (A5): 26%
Approvals:
CWB: AWS A5.10 (Item number ending with A ), DB: 61.039.02, VdTÜV: 04665, Ü: 61.039, CE: EN 13479