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OK 84.42
SMAW
Welding current, A
AC, DC+ OCV 70 V
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| Classifications | Approvals | Typical all weld metal composition | Typical properties all weld metal | | | | Redrying temperature, °C
200
Redrying time, hours
2
Recovery
110-115
Weld metal hardness, a w
39-45 HRC
Hardening temperature, °C
950-1000
Hardening oil/air
Quenching medium
Soft annealing, °C
780-800
Tempering resistance
Temp°C/1h.HRC
100.45
200.44
300.44
400.45
500.46
600.41
700.34
Machinability
By cemented carbide tools
Impact resistance
Very good
Abrasion resistance
Good
High temp. wear resistance
Very good
Corrosion resistance
Very good
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| Diameter, mm | 2,5 | 3,2 | 4,0 | 5,0 | | Length, mm | 350 | 450 | 450 | 450 | | Arc voltage, V | 22 | 24 | 25 | 31 | | Welding current, A | 70-110 | 100-160 | 140-220 | 220-310 | | N. Kg weld metal/kg electrodes | 0,57 | 0,60 | 0,60 | 0,62 | | B. No. of electrodes/kg weld metal | 77,0 | 34,0 | 22,5 | 14,0 | | H. Kg weld metal/hour arc time | 1,0 | 1,5 | 2,1 | 3,2 | | T. Burn-off time, secs/electrode | 46 | 69 | 78 | 80 |
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