OK 92.55
SMAW
Type Basic

OK 92.55 is an all-positional, basic coated electrode which deposits a NiCr-based alloy with additions of Mo, W and Nb. The electrode is specifically designed for welding of 9Ni steels for cryogenic applications down to -196C.
Welding current, A
AC, DC+ - OCV 55 V


ClassificationsApprovalsTypical all weld metal compositionTypical properties all weld metal
SFA/AWS A5.11
ENiCrMo-6
EN ISO 14172
E Ni 6620 (NiCr14Mo7Fe)
ABSENiCrMo-6
BVN50, N90
DNVFor welding NV 1,5Ni to NV 9 Ni
C0,05
Si0,3
Mn3,0
Cr13,0
Ni69
Mo6,2
W1,6
Nb1,3
Cu<0,3
Fe5,0
Redrying temperature, C
300
Redrying time, hours
1-2
Recovery
150-155
Yield stress, MPa
>430
Tensile strength, MPa
>690
Elongation, %
>35
Elongation, %
>35
Ferrite content
FN 0
Charpy V
Test temps, CImpact values, J
-196>70

Diameter, mm2,53,24,05,0
Length, mm 350 350 350 350
Arc voltage, V 23 22 22 23
Welding current, A 65-115 70-150 120-200 150-240
N. Kg weld metal/kg electrodes 0,70 0,66 0,67 0,68
B. No. of electrodes/kg weld metal 55 34 23 14
H. Kg weld metal/hour arc time 1,1 1,5 1,9 2,8
T. Burn-off time, secs/electrode 70 68 82 91

 

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