OK Flux 10.71L

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OK Flux 10.71L is an agglomerated, basic flux for submerged arc welding. It is used for single and multi-run welding of all plate thicknesses. It can be combined with a wide range of wires and thus it is suitable for all kinds of steels. OK Flux 10.71L combines good toughness values with excellent weldability. It is used for single & multi-wire procedures such as tandem, twin-arc, tandem-twin welding and many more, for butt, overlap and fillet welds. It works equally well on DC and AC current. The good slag detachability and limited alloying of Si and Mn makes it well suited for multi-pass thick section welding.
In general construction, OK Flux 10.71L is one of the most used SAW fluxes. Not just for structural steels and fine-grained steels, but also for weather resistant steels e.g. for bridges. Pressure vessels are welded with this flux, because it can be used for a wide range of steels including low temperature steels. This reduces the number of different fluxes a customer needs to have in stock. Wind tower production with plate thicknesses of greater than 50 mm require not only excellent slag detachability particularly in the first run, high deposition rates in all following runs and also excellent toughness values. Since OK Flux 10.71L offers all this it is well established in this market segment. Other applications are in shipbuilding or in the production of pipes with steels up to X70 strength level.


Grade S A AB 1 67 AC H5
Name EN ISO 14174

Consumable Characteristics

Alloy Transfer Slightly Silicon and moderately Manganese alloying
Basicity Index nom: 1.5
Density nom: 1.2 kg/dm3
Diffusible Hydrogen max 5 ml /100g weld metal (Redried flux)
Grain Size 0.2-1.6 mm (10x65 mesh)
Slag Type Aluminate-basic

Flux Consumption

Volts kg Flux / kg Wire DC+ kg Flux / kg Wire AC
26 V 0.7 kg 0.6 kg
30 V 1.0 kg 0.9 kg
34 V 1.3 kg 1.2 kg
38 V 1.6 kg 1.4 kg
Amps Dimensions Travel Speed
580 A Ø 4.0 mm 55 cm/min


Wire SFA/AWS - EN ISO AWS - As Welded AWS - PWHT
OK Autrod 12.22L A5.17: EM12K / 14171-B: SU21 A5.17: F7A4-EM12K A5.17: F6P5-EM12K
ESAB SA10K A5.17: EH10K A5.17: F7A4-EH10K A5.17: F7P6-EH10K
OK Autrod 12.40L A5.17: EH14 A5.17: F7A4-EH14 A5.17: F7P5-EH14
OK Autrod 12.24L A5.23: EA2 A5.23: F8A2-EA2-A4 A5.23: F7P0-EA2-A4
OK Autrod 12.33L A5.23: EA3K A5.23: F9A0-EA3K-G A5.23: F8P0-EA3K-G
OK Autrod 12.08L A5.17: EL8/EL12 / 14171-A: S1 A5.17: F6A2-EL8/EL12


Combined with Wire ABS LR
OK Autrod 12.08L * -
OK Autrod 12.08L 2 * -
OK Autrod 12.22L - *
OK Autrod 12.40L 1 - *
OK Autrod 12.40L 2 - *
OK Autrod 12.40L 3 - *
OK Autrod 12.40L 4 - *
*Selected production units only. Please contact ESAB for more information. Visit to download specific flux/wire combination fact sheets for more details.

Typical Mechanical Properties

Combined with Wire Condition Yield Strength Tensile Strength Charpy V-Notch Elongation
ESAB SA10K As Welded AWS DC+ 490 MPa 580 MPa 70 J
45 J
30 J
26 %
ESAB SA10K Stress Relieved AWS DC+ 430 MPa 530 MPa 120 J
100 J
75 J
40 J
32 %
OK Autrod 12.08L As Welded AWS DC+ 390 MPa 450 MPa 100 J
70 J
25 %
OK Autrod 12.22L As Welded AWS DC+ 450 MPa 540 MPa 60 J
45 J
30 J
29 %
OK Autrod 12.22L Stress Relieved AWS DC+ 390 MPa 490 MPa 90 J
65 J
40 J
30 J
32 %
OK Autrod 12.24L As Welded AWS DC+ 550 MPa 610 MPa 90 J
65 J
40 J
23 %
OK Autrod 12.24L Stress Relieved AWS DC+ 480 MPa 560 MPa 80 J
50 J
26 %
OK Autrod 12.33L As Welded AWS DC+ 630 MPa 700 MPa 65 J
35 J
25 %
OK Autrod 12.33L Stress Relieved AWS DC+ 550 MPa 650 MPa 70 J
40 J
30 %
OK Autrod 12.40L As Welded AWS DC+ 490 MPa 580 MPa 75 J
60 J
40 J
27 %
OK Autrod 12.40L Stress Relieved AWS DC+ 440 MPa 530 MPa 100 J
80 J
55 J
45 J
29 %

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Mn Mo Si
ESAB SA10K DC+ 550A, 29V
0.07 % 1.75 % - 0.50 %
OK Autrod 12.08L DC+ 550A, 29V
0.06 % 0.90 % - 0.20 %
OK Autrod 12.22L DC+ 550A, 29V
0.08 % 1.35 % - 0.40 %
OK Autrod 12.24L DC+ 550A, 29V
0.08 % 1.35 % 0.45 % 0.40 %
OK Autrod 12.33L DC+ 550A, 29V
0.06 % 1.95 % 0.40 % 0.75 %
OK Autrod 12.40L DC+ 550A, 29V
0.07 % 1.95 % - 0.40 %

How to purchase OK Flux 10.71L

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