Application / Properties: Agglomerated aluminate-basic type flux for welding of mild and medium steels and for pipe steels up to X70 Grade; AMA-AP380-3 produces a slight silicon and manganese pick-up. Owing to its metallurgical behavior, it can be used with S2Mo and S3Mo wire electrodes. It is suitable for longitudinal and spiral welding system. The flux has a high current carrying capacity and as such is suitable for fillet and butt welding applications especially for weld in heavy section steels work. The weld bead is of uniform profile with smooth weld bead profile and good blending at the weld toes even at high welding speeds. The slag detachment is good and in most cases is self-lifting. AMA AP380-3 can be used on either DC+ or AC up to 1200A on a single wire. Damp flux shall be re-dried by baking at 300°C-350°C Grain size in according with DIN 32 522:2-18.
Main Constituents:
SiO2+TiO2
CaO+MgO
Al2O3+Mno
CaF2
25%
25%
35%
13%
Basicity as to boniszewski: ~1.3
All weld metal analysis (typical values):
AMA Trade Name
DIN/EN
C
Si
Mn
Mo
50-14
S2mo
0.06
0.25
1.3
0.5
Mechanical properties of all-weld metal (typical values):
Welding Wire
Heat Treatment
Tensile Strength ( N/mm 2 )
Yield Strength ( N/mm 2 )
Elongation Lo=5d%
Impact Value (Joule) ISO -V 20°C -30°C-
50-14
As Welded
580
490
23
70 50
Mechanical properties of welded joint (typical values):
