Submerged Arc Welding Technical Handbook - Esab

OK Flux 10.88 – High tolerance
for rust and mill scale, for -20°C
applications
OK Flux 10.88 is an
agglomerated, low-basicity flux
for submerged arc welding. If
welding is to be done without
removing the heavy mill scale
or rust from the welding area
then this flux is the correct one
to choose. Furthermore it
produces a weld metal with
toughness values down to -20°C
when combined with a
standard, non-alloyed wire.
The flux is designed for single
layer and multi-layer welding of
up to 30mm plate thickness. It
works equally well on DC and
AC current and is designed for
butt, fillet and overlap welds. It
can be used over a wide
parameter range giving
excellent slag removal and
smooth weld bead surfaces.
Classification flux Basicity index Density Grain size
EN 760: SA AR 1 89 AC 0.7 ~ 1.2 kg/dm 3 0.2 - 1.6 mm
Slag type Polarity Alloy transfer
Aluminate-rutile DC+ / AC High Si and very high Mn alloying
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
-0,2
% Si pick-up
from flux
450 A
% Si in wire
750 A
0,05 0,10 0,15 0,20 0,25 0,30
Single wire, ø 4.0 mm, DC+, 30 V, 60 cm/min
% Mn pick-up
from flux
2,2
1,8
1,4
1,0
0,6
0,2
-0,2
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 38 0 AR S1 A5.17: F6AZ-EL12
12.20 S2 / EM12 S 42 2 AR S2 A5.17: F7A0-EM12
12.22 S2Si / EM12K S 42 2 AR S2Si A5.17: F7A0-EM12K A5.17: F6P0-EM12K
Approvals
ABS BV DNV GL LR TÜV DB CE
with OK Autrod
12.22 3Y400M 3Y40M III Y40M 3Y40M 3Y40M
OK Flux 10.88 is used in all
market segments where severe
plate surface conditions are
found. This includes general
constructions, beam
fabrications, pressure vessels,
shipbuilding and transport
industries. Addionally, this flux
is appreciated on clean plates
for its high resistance against
porosity and its wide
application field due to the
toughness of the weld metal
down to -20°C.
Typical weld metal chemical composition (%), DC+
C Si Mn Cr Ni Mo Other
With OK Autrod
12.10 0.05 0.6 1.7
12.20 0.05 0.6 1.8
12.22 0.05 0.7 1.8
Typical weld metal mechanical properties, DC+
ReL / Rp0.2
(MPa)
Rm
(MPa)
A4 / A5
(%)
CVN
(J at °C)
With OK Autrod 0 -18
12.10 400 470 30 45 AW
12.20 430 520 25 70 50 AW
12.22 440 510 26 70 50 AW
12.22 390 470 25 60 50 SR
For more information view the Product Data Sheets or contact ESAB.
AW/
SR
Remarks
52