5556 aluminum wire for mig welder with higher than 5% mg and high manganese content, has high strength, good corrosion resistance and thermal cracking resistance. After the welding of the welding seam is still white, it can provide a good color for the welded joint.  
Application:
for high magnesium (3%Mg) aluminum alloy argon arc welding of filling material.  

Physical Property
Density  kg/dm3	Melting temperature ℃	Thermal conductivity  w/m•K	Linear expansion coefficient  10¯6/K(20-100℃)	Electric conductivity  % IACS
2.65	572-633	116	23.9	29

 

Weld Mechanical Properties (reference value)
Tension Strength(MPa)		Yield Strength(MPa)	Elongation (%)
280--310		130--140	15--20
ER5556 Aluminium & Aluminium Alloy welding wires
Classification	GB/T 10858-2008    AWS A5.10····· ER5556
Typical composition in %	Si···················       ＜0.25 Fe···················      ＜0.40 Cu···················      ＜0.10 Mn·················         0.60—1.00 Mg·················         4.70—5.50 Cr·················          0.05—0.20 Zn···················       ＜0.20 Be··················           ＜0.0003 Ti·················            0.05—0.20 Others···············            ＜0.05 Others Total···········               ＜0.15
Physical properties (Approx.Values)	0.2% yield strength Rpo2 (Mpa)····        125 Tensile Strength Rm (Mpa)·····            275  Elongation A5 (L0=5d0) (%)······      17 Test Temperature (℃）······            20
Performance & Usage	This type of pwireuct has good performance in mechanics widely used in  welding joint with special requirement of higher intensity。 Pwireuct Usage：like engine, electric, power,chemistry, and food etc.
Shielding gas	Argon, Helium, or Argon/Helium—mixtures.
Dimensions Φ	MIG—wires (mm)： 0.8 ; 0.9 ; 1.0 ; 1.2 ; 1.6 ; 2.0 ; 2.4   TIG —wires（mm)： 1.6 ; 2.0 ; 2.4 ; 3.2 ; 4.0 ; 5.0 ; 6.0
wire Packagings	Mig wires： S100/0.5kg 1Lb , S200/2kg , S270-S300/6kg-7kg
	Tig wire  ： 5/10kg     ·······     length ：1000mm

 
Note: 
1. Because of the stress corrosion cracking of the welded joint of aluminum alloy when the temperature is above 65 degrees, the electrode is not used in the structure of aluminum alloy in such a temperature environment.
 
2. Welding should be strict and clear the edge of the welding of the oxide film and oil, otherwise it will cause welding seam welding and cause the hole, slag and other defects.
 
3. Welding can be used for holding molten metal plate, in order to ensure the weld forming, and avoid hot crack.