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OK 76.28

Basic DC electrode for welding creep-resisting steels of the type 2.25 % Cr and 1 % Mo.

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Highlights

Process

Specifications
Classifications SFA/AWS A5.5 : E9018-B3
EN ISO 3580-A : E CrMo2 B 4 2 H5
Approvals BV : C2M1 H5
CE : EN 13479
UKCA : EN 13479
VdTÜV : 00971
Welding Current DC+(-)
Diffusible Hydrogen < 5ml/100g
Alloy Type Low alloyed (2.2 % Cr ; 1,1 % Mo)
Coating Type Basic covering
Tensile_Properties
Testing Condition Yield Strength Tensile Strength Elongation
ISO
PWHT
1 hour(s) 690 °C
630 MPa 720 MPa 21 %
Charpy Testing
Testing Condition Testing Temp Impact Value
ISO
PWHT
1 hour(s) 690 °C
20 °C 130 J
Typical Weld Metal Analysis %
C Mn Si Cr Mo
ISO
0.06 0.7 0.3 2.2 1.1
Deposition Data
Diameter Amps Volts Efficiency (Per) Fusion time per electrode at 90Per I max Deposition rate at 90Per
2.5 x 300 mm 58 % 52 sec 0.8 kg/h
3.2 x 350 mm 95-150 A 26 V 59 % 62 sec 1.2 kg/h
4.0 x 450 mm 130-190 A 28 V 64 % 88 sec 1.8 kg/h
5.0 x 450 mm 150-260 A 29 V 64 % 92 sec 2.7 kg/h
6.0 x 450 mm 200-350 A 30 V 64 % 90 sec 3.9 kg/h
Description Product Number
OK 76.28 2.5x300mm 1/4 VP 76282520K0
OK 76.28 3.2x350mm 1/2 VP 76283230G0
OK 76.28 5.0x450mm 3/4 VP 76285040V0
OK 76.28 6.0x450mm 3/4 VP 76286040V0
OK 76.28 4.0x450mm 3/4 VP 76284040V0
OK 76.28 2.5x350mm 1/2 VP 76282530G0

Fact Sheets

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OK 76.28

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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