OK 67.53
SMAW
Type Rutile

OK 67.53 is a rutile-coated electrode for welding ferritic austenitic stainless steel, e.g. UNS S31803. Special applications are welding of pipes with high resistance to stress corrosion up to 300C, the so called Duplex steels.
Welding current, A
DC+, AC OCV 55 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
EN 1600
E 22 9 3 N L R 1 2
SFA/AWS A5.4
(E2209-16)
Werkstoff Nr.
1.4462
DNVFor duplex SS
UDTEN 1600
VdTV05422
C<0,03
Si0,9
Mn0,9
Cr23,0
Ni9,5
Mo3,3
Cu<0,3
N0,18
Redrying temperature, C
350
Redrying time, hours
2
Recovery
102
Yield stress, MPa
660
Tensile strength, MPa
840
Elongation, %
25
Elongation, %
25
Ferrite content
FN 25-40
Charpy V
Test temps, CImpact values, J
+20>40

Diameter, mm2,02,53,2
Length, mm 265 300 350
Arc voltage, V 24 23 25
Welding current, A 25-60 30-80 70-110
N. Kg weld metal/kg electrodes 0,64 0,63 0,57
B. No. of electrodes/kg weld metal 170 96 51
H. Kg weld metal/hour arc time 0,5 0,7 1,3
T. Burn-off time, secs/electrode 41 54 56

 

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