Welding Inspection c Swip

OK 73.08 Type

Lime-basic

SMAW E8018-G

Description

Classifications

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 the welding of weatherproof steel and for ship’s hull structural 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.

SFA/AWS A5.5 EN 499 ISO 2560

Typical all weld metal composition, % C 0.06

Recovery 125%

Welding current AC, DC(+) OCV 65 V

12346

E8018-G E 46 5 Z B 32 E 51 5 B 120 26 H

Si 0.4

Mn 1.0

Ni 0.7

Cu 0.4

Typical mech. properties all weld metal Yield stress, MPa Tensile strength, MPa Elongation, %

500 590 27

Charpy V Test temps, °C -20 -40 -50

Impact values, J 160 130 70

Approvals ABS BV DB DNV DS GL LR RS Sepros SFS SS UDT Ü VdTÜV

3H5, 3Y 3Y HH 10.039.20 3 YH10 EN 499 3YH15 3, 3Y H15 3YHH UNA 485154 EN 499 EN 499 EN 499 10.039/1 02115

Welding parameters

Diameter, mm 2.0 2.5 3.2 3.2 4.0 5.0 6.0

Length, mm 300 350 350 450 450 450 450

N. B. H. Kg weld No. of elec- Kg weld Welding Arc voltage, metal/kg trodes/kg metal/hour current, A V electrodes weld metal arc time 60-90 20 0.62 113.0 0.7 80-115 21 0.62 66.0 0.9 100-150 23 0.62 43 1.2 100-150 22 0.66 30.5 1.3 130-200 23 0.68 20.0 1.8 190-280 27 0.70 13.5 2.6 240-370 28 0.68 9.5 3.3

T. Burn-off time, s/ electrode 42 59 68 90 100 106 115

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