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OK 74.46

OK 74.46 is an LMA electrode alloyed with 0.5% Mo for welding steels for pressure vessels. The running characteristics make it suitable for welding joints in the inclined positions. The composition of the coating is adapted for welding with low currents, making it very suitable for the welding of pipes.

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Highlights

Process

Specifications
Classifications SFA/AWS A5.5 : E7018-A1
EN ISO 3580-A : E Mo B 3 2 H5
Approvals CE : EN 13479
DB : 10.039.45
VdTÜV : 01043
Welding Current AC, DC+
Diffusible Hydrogen < 5ml/100g
Alloy Type Low alloyed (0.5 % Mo)
Coating Type Basic covering
Min AC OCV 65
Tensile_Properties
Testing Condition Yield Strength Tensile Strength Elongation
ISO
PWHT
1 hour(s) 620 °C
460 MPa 560 MPa 27 %
Charpy Testing
Testing Condition Testing Temp Impact Value
ISO
PWHT
1 hour(s) 620 °C
20 °C 175 J
Typical Weld Metal Analysis %
C Mn Si Cr Mo
0.05 0.77 0.38 0.04 0.57
Deposition Data
Diameter Amps Volts Efficiency (Per) Fusion time per electrode at 90Per I max Deposition rate at 90Per
2.0 x 300 mm 55-80 A 22 V 59 % 40 sec 0.7 kg/h
2.5 x 350 mm 75-110 A 23 V 59 % 55 sec 0.9 kg/h
3.2 x 350 mm 105-150 A 23 V 54 % 66 sec 1.0 kg/h
3.2 x 450 mm 105-150 A 25 V 59 % 81 sec 1.2 kg/h
4.0 x 450 mm 140-200 A 26 V 65 % 90 sec 1.8 kg/h
5.0 x 450 mm 190-270 A 27 V 65 % 104 sec 2.4 kg/h

Description Product Number
OK 74.46 2.0x300mm 1/4 VP 74462020K0
OK 74.46 2.5x350mm 1/4 VP 74462530K0
OK 74.46 3.2x350mm 1/2 VP 74463230G0
OK 74.46 3.2x450mm 1/2 VP 74463240G0
OK 74.46 4.0x450mm 1/2 VP 74464040G0
OK 74.46 5.0x450mm 1/2 VP 74465040G0

Fact Sheets

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OK 74.46

Welding Invented

When our founder Oscar Kjellberg developed the world's first coated welding electrode in 1904, he launched a company whose innovation and uncompromising standards have helped create the history of welding itself. This legacy continues in the quality, performance, and continuous development of the covered electrodes we make today.

Factory Fresh Low Alloy Electrodes, Straight from the Pack

ESAB's VacPac™ packaging is hermetically sealed and vacuum-packed to protect low alloy electrodes from moisture pick up and re-absorption from the air. Electrodes can be used straight from the package without the need to re-bake them or you can store them temporarily in holding ovens and quivers. Get fresh, dry low alloy covered electrodes every time with ESAB.

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