Agglomerated Manganese-Silicate type flux for high-speed welding of butt and fillet welds. The high silicon and manganese transfer from the flux to weld metal alloys to use the AMA-OP176 flux with low or medium manganese wire electrodes like 50-11, 50-12, 50-14. Owing to its good weld ability AMA-OP176 can be used in welding from both sides in one pass, e.g. in longitudinal welding of large diameter pipes and in thin walled spiral pipes. AMA OP 176 can be used on either DC (positive) or AC current.
Damp flux shall be redried by baking at 300°C – 350°C Grain size in according to DIN 32 522:3-20
Main Constituents:
SiO2+TiO2
CaO+MgO
Al2O3+Mno
CaF2
40%
25%
20%
10%
Basicity as to boniszewskii: ~0.8
All -Weld metal analysis (typical values):
AMA Trade Name
DIN/EN
C
Si
Mn
Mo
50-11
S1
0.03
0.6
1.2
-
50-12
S2
0.06
0.7
1.5
-
Mechanical properties of all-weld metal (typical values):
With Wire Electrode
Heat Treatment
Tensile Strength (N/mm 2 )
Yield Strength (N/mm 2 )
Elongation Lo=5d %
Impact energy (Joule) ISO -V 20°C 0°C -20°C -30°C+
