Submerged Arc Welding Technical Handbook - Esab

OK Flux 10.87 – High speed
flux with perfect wetting
OK Flux 10.87 is an
agglomerated, low-basicity flux
for submerged arc welding. It
gives perfect wetting and
excellent weld bead
appearance in butt, overlap
and fillet welds at high welding
speeds.
OK Flux 10.87 is used for
single and multi-wire
procedures and works equally
well on DC and AC current. It is
intended for a limited number
of passes and plate thickness
up to 25mm.
The main application area for
OK Flux 10.87 is in the
production of air compressor
tanks, LPG bottles and fire
extinguishers. A flat weld bead
and smooth, clean surface with
excellent slag detachability is
achieved, also when the
second run has been preheated
by the first run. Other
industries with similar
requirements also make use of
OK Flux 10.87, including
general construction and the
automotive industry.
Classification flux Basicity index Density Grain size
EN 760: SA AR 1 95 AC 0.4 ~ 1.2 kg/dm3 0.2 - 1.6 mm
Slag type Polarity Alloy transfer
Aluminate-rutile DC+ / AC Very high Si alloying, neutral on Mn
Flux consumption
kg flux / kg wire
Voltage DC+ AC
26 0.6 0.5
30 0.9 0.7
34 1.2 1.0
38 1.5 1.3
Classification
1,0
0,8
0,6
0,4
0,2
0,0
% Si pick-up
from flux
450 A
750 A
% Si in wire
-0,2
0,05 0,10 0,15 0,20 0,25 0,30
Single wire, ø 4.0 mm, DC+, 30 V, 60 cm/min
1,8
1,4
1,0
0,6
0,2
-0,2
-0,6
-1,0
% Mn pick-up
from flux
450 A
750 A
% Mn in wire
0,5 1,0 1,5 2,0
Wire
Weld metal
OK Autrod EN / AWS EN / AW AWS / AW AWS / PWHT
12.10 S1 / EL12 S 35 A AR S1 A5.17: F6AZ-EL12 A5.17: F6PZ-EL12
12.20 S2 / EM12 S 42 A AR S2 A5.17: F7AZ-EM12 A5.17: F6PZ-EM12
12.22 S2Si / EM12K S 42 A AR S2Si A5.17: F7AZ-EM12K A5.17: F6PZ-EM12K
Typical weld metal chemical composition (%), DC+
C Si Mn Cr Ni Mo Other
With OK Autrod
12.10 0.05 0.8 0.6
12.20 0.05 0.8 1.0
12.22 0.05 0.9 1.0
Typical weld metal mechanical properties, DC+
ReL / Rp0.2
(MPa)
Rm
(MPa)
A4 / A5
(%)
CVN
(J at °C)
With OK Autrod +20 0
12.10 370 470 25 50 25 AW
12.20 410 500 25 50 25 AW
12.22 420 510 25 50 25 AW
12.10 345 445 25 50 25 SR
12.20 360 480 25 50 25 SR
12.22 400 490 25 50 25 SR
AW/
SR
For more information view the Product Data Sheets or contact ESAB.
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