OK 74.46
SMAW
Type Basic

OK 74.46 is an LMA electrode with 0.5 % Mo for welding steels for pressure vessels. The running characteristics makes it suitable for welding joints in inclined positions. The composition of the coating is adapted to welding on low currents making OK 74.46 very suitable for welding of pipes.
Welding current, A
DC+, AC OCV 65 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
SFA/AWS A5.5
E7018-A1
EN 1599
E Mo B 32 H5
VdTV01043
CEEN 13479
C0,06
Si0,5
Mn0,7
Mo0,5
P0,02
S0,02
Redrying temperature, C
350
Redrying time, hours
2
Recovery
115%
Yield stress, MPa
460
Tensile strength, MPa
560
Elongation, %
27
Elongation, %
27
Charpy V
Test temps, CImpact values, J
+20175
0>31

Diameter, mm2,02,53,23,24,05,06,0
Length, mm 300 350 350 450 450 450 450
Arc voltage, V 22 23 23 25 26 27 28
Welding current, A 55-80 75-110 105-150 105-150 140-200 190-270 260-370
N. Kg weld metal/kg electrodes 0,59 0,59 0,54 0,59 0,65 0,65 0,65
B. No. of electrodes/kg weld metal 136,0 73,0 53,0 37,0 22,5 14,5 10.0
H. Kg weld metal/hour arc time 0,7 0,9 1,0 1,2 1,8 2,4 3,4
T. Burn-off time, secs/electrode 40 55 66 81 90 104 108

 

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