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OK 61.80
SMAW
Type Rutile-acid
OK 61.80 is a niobium-stabilized, stainless steel, LMA electrode for welding of niobium or titanium-stabilized steels of the 19Cr10 Ni type.
Welding current, A
DC+, AC OCV 50 V
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| Classifications | Approvals | Typical all weld metal composition | Typical properties all weld metal | | EN 1600 | | E 19 9 Nb R 1 2 | | SFA/AWS A5.4 | | E347-17 | | Werkstoff Nr. | | 1.4551 |
| | GL | 4550 | |
| VdTÜV | 00638 | |
| CE | EN 13479 | |
| | C | <0,03 | | Si | 0,7 | | Mn | 0,9 | | Cr | 20,0 | | Ni | 10,0 | | Mo | <0,3 | | Nb | <0,6 | | Cu | <0,3 |
| Redrying temperature, °C
350
Redrying time, hours
2
Recovery
103-106
Yield stress, MPa
480
Tensile strength, MPa
620
Elongation, %
40
Elongation, %
40
Ferrite content
FN 6-12
| Charpy V | | Test temps, °C | Impact values, J | | +20 | 60 | | -80 | 40 |
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| Diameter, mm | 2,0 | 2,5 | 3,2 | 4,0 | 5,0 | | Length, mm | 300 | 300 | 350 | 350 | 350 | | Arc voltage, V | 24 | 26 | 28 | 30 | 31 | | Welding current, A | 40-65 | 50-90 | 70-130 | 90-180 | 140-250 | | N. Kg weld metal/kg electrodes | 0,56 | 0,56 | 0,56 | 0,56 | 0,56 | | B. No. of electrodes/kg weld metal | 150 | 97 | 50 | 33 | 21 | | H. Kg weld metal/hour arc time | 0,7 | 1,0 | 1,4 | 2,0 | 2,9 | | T. Burn-off time, secs/electrode | 35 | 38 | 53 | 55 | 60 |
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