OK 73.08
SMAW
Type Basic

OK 73.08 is a NiCu-alloyed LMA electrode, which deposits a weld metal with good corrosion resistance to sea-water and flue gases, for welding of weathering steel and for ship hull construction steel. The weld metal has excellent mechanical properties. It is particularly suitable for welding the shell plating of ice breakers and other ships, which work under conditions where the protective paint-coating wears off.
Welding current, A
AC, DC(+) OCV 65 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
SFA/AWS A5.5
E8018-G
EN ISO 2560-A
E 46 5 Z B 32
ABS3H5, 3Y
BV3Y HH
DB10.039.20
DNV3 YH10
GL3YH15
LR3, 3Y H15
RS3YHH
SeprosUNA 409819
VdTV02115
CEEN 13479
C0,06
Si0,4
Mn1,0
Ni0,7
Cu0,4
P0,02
S0,02
Redrying temperature, C
350
Redrying time, hours
2
Recovery
125%
Yield stress, MPa
500
Tensile strength, MPa
590
Elongation, %
27
Elongation, %
27
Charpy V
Test temps, CImpact values, J
-20160
-40130
-5070

Diameter, mm2,02,53,23,24,05,06,0
Length, mm 300 350 350 450 450 450 450
Arc voltage, V 20 21 23 22 23 27 28
Welding current, A 60-90 80-115 100-150 100-150 130-200 190-280 240-370
N. Kg weld metal/kg electrodes 0,62 0,62 0,62 0,66 0,68 0,70 0,68
B. No. of electrodes/kg weld metal 113,0 66,0 43 30,5 20,0 13,5 9,5
H. Kg weld metal/hour arc time 0,7 0,9 1,2 1,3 1,8 2,6 3,3
T. Burn-off time, secs/electrode 42 59 68 90 100 106 115

 

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