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OK 86.08
SMAW
Type Basic
OK 86.08 deposits an austenitic manganese steel alloy which work-hardens under impact and compressive stresses. The electrode is primarily used for surfacing and building up manganese steel components such as crusher, jaws and hammers. The interpass temperature should be kept as low as possible.
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
105
Yield stress, MPa
480
Tensile strength, MPa
780
Elongation, %
20
Weld metal hardness, a w
180-200 HB
Weld metal hardness, w h
44-48 HRC
Machinability
Grinding
Metal-to-metal wear resistance
Excellent
Impact resistance
Very good
| Charpy V | | Test temps, °C | Impact values, J | | +20 | 70 | | -20 | 45 | | -40 | 35 | | -60 | 25 |
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| Diameter, mm | 3,2 | 4,0 | 5,0 | | Length, mm | 450 | 450 | 450 | | Arc voltage, V | 23 | 23 | 25 | | Welding current, A | 95-135 | 130-180 | 170-230 | | N. Kg weld metal/kg electrodes | 0,60 | 0,60 | 0,60 | | B. No. of electrodes/kg weld metal | 35,5 | 24,0 | 15,0 | | H. Kg weld metal/hour arc time | 1,1 | 1,4 | 1,8 | | T. Burn-off time, secs/electrode | 95 | 109 | 132 |
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