F7A4-EM12-F7A4-EM12K-F7P5-EM12K-F7A5-EM13K-F7P5-EM13K-F8A5-EH12K-F7P6-EH12K-F8A4-EA2-F8P4-EA2
op132 ama op132

Flux for Submerged Arc welding of General Struct

AMA OP132

DIN EN 760: SA AB 1 67 AC H5
DIN 32 522: B AB 1 67 AC 12 MHP5
AWS/ASME: F8A4-EA2  F7P5-EM13K      F7A4-EM12      F8P4-EA2  F8A5-EH12K      F7A4-EM12K      F7P6-EH12K      F7P5-EM12K      F7A5-EM13K
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Application and Properties:

Agglomerated aluminate-basic type flux for welding of pipe steels according to DIN 17172 and API 5L steels up to X70. Weld metal hardness is less than 240HV and resistant to sour gas environment. AMA OP132 produces a slight silicon and manganese pick-up. Weld metal toughness in low temperature is very good. When using this flux with S2MoTiB or S3MoTiB wire, the toughness of weld metal will be increased. It is suitable for longitudinal welding of sour gas and oil pipes and spiral pipes at high speed welding with single and multi-wire (up to 5 wires) welding system. The weld bead is of uniform profile, good wetting without undercut. The slag detachment is excellent. AMA OP132 can be used on either DC (positive) or AC up to 1200A on a single wire.
Damp flux shall be redried by baking at 300 – 350 c
Grain size in according with Din 32 522:3-18.

Main Constituents:

SiO2+TiO2 CaO+MgO Al2O3+Mno CaF2
20% 25% 35% 15%

Basicity to boniszewski: ~1.5

All weld metal analysis (typical values):

Welding Wire Weight %
AMA Trade Name DIN/EN C Si Mn Mo
50-11 S1 0.06 0.15 0.8 -
50-12 S2 0.06 0.20 1.3 -
50-14 S2Mo 0.05 0.20 1.3 0.47
50-18 S4 0.06 0.30 1.8 -

Mechanical properties of all-weld metal (typical values):

Welding Wire Heat Treatment Heat Treatment
(N/mm 2 ) 		Tensile Strength
(N/mm 2 ) 		Elongation
Lo=5d% 		Impact Value (Joule)
ISO -V
0°C     -20°C     -40°C     -60°C
50-11 As Welded 470 360 26.5 200            80            -           -
50-12 As Welded 520 420 28 -            160            120           -
50-14 As Welded 580 495 23 -              110            60           -
50-18 As Welded 580 480 26 -              105            65           50

Mechanical properties of all-weld metal (typical values):

X70 Plates – Weld from both sides in one pass.

Welding Wire Heat Treatment Tensile Strength
(N/mm 2 ) 		Yield Strength
(N/mm 2 ) 		Elongation
Lo=5d% 		Impact Value (Joule)
ISO -V
0°C     -20°C     -30°C     -40°C
50-12 As Welded >460 >350 - 90            80            65           50
50-14 As Welded >610 >520 - >100            >70            >50           -