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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
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| Classifications | Approvals | Typical all weld metal composition | Typical properties all weld metal | | SFA/AWS A5.5 | | E8018-G | | EN ISO 2560-A | | E 46 5 Z B 32 |
| | ABS | 3H5, 3Y | |
| BV | 3Y HH | |
| DB | 10.039.20 | |
| DNV | 3 YH10 | |
| GL | 3YH15 | |
| LR | 3, 3Y H15 | |
| RS | 3YHH | |
| Sepros | UNA 409819 | |
| VdTÜV | 02115 | |
| CE | EN 13479 | |
| | C | 0,06 | | Si | 0,4 | | Mn | 1,0 | | Ni | 0,7 | | Cu | 0,4 | | P | ³0,02 | | S | ³0,02 |
| 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, °C | Impact values, J | | -20 | 160 | | -40 | 130 | | -50 | 70 |
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| 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 | | 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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