Submerged Arc Welding Technical Handbook - Esab

OK Flux 10.94 – An efficient
technical solution for super duplex
and high ferrite applications
OK Flux 10.94 is an
agglomerated, fluoride basic,
chromium compensating flux
for butt welding of stainless
steels. Specially recommended
for welding stainless steels
when a higher ferrite content is
required. Primarily
recommended for multi-run
welding of unlimited plate
thickness.
Classification flux Basicity index Density Grain size
EN 760: SA AF 2 Cr DC 1.7 ~ 1.0 kg/dm 3 0.25 - 1.6 mm
Slag type Polarity Alloy transfer
Basic DC+ Cr compensating
Flux consumption kg flux / kg wire
Voltage
DC+
26 0.5
30 0.6
34 0.8
38 1.0
This flux works well on DC
current and provides good slag
detachability and nice bead
appearance. OK Flux 10.94
gives a higher ferrite content in
the weld metal due to the
chromium addition, reducing
the risk of hot cracking. The
low Si addition during welding
provides good mechanical
properties of the weld metal.
The flux is used in the chemical
and petrochemical industries
for the welding of pressure
vessels, storage tanks and
chemical tankers. Especially
recommended for the joining of
super duplex 2507 stainless
steels, e.g. in offshore
applications.
Classification
Wire
OK Autrod
EN / AWS
308L
S 19 9 L / ER308L
347 S 19 9 Nb / ER347
316L
S 19 12 3 L / ER316L
2509 S 25 9 4 N L
Typical weld metal chemical composition (%), DC+
C Si Mn Cr Ni Mo N FN Other
With OK Autrod
308L 0.02 0.5 1.4 20.2 9.7 11
347 0.04 0.5 1.0 19.6 9.6 9 Nb: 0.5
316L 0.02 0.6 1.2 19.5 11.5 2.7
2509