OK 73.79

ESAB

OK 73.79

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OK 73.79 is a nickel-alloyed, LMA electrode for welding 3.5 Ni steel with impact requirements down to -101°C. It is used, for example, for ethane tanks and chemical plants.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded iso
35 J (26 ft-lb) -101 degC (-150 degF)
130 J (96 ft-lb) -60 degC (-76 degF)
110 J (81 ft-lb) -75 degC (-103 degF)

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Yield Strength
As Welded27 %ISO630 MPa (91 ksi)540 MPa (78 ksi)

Deposition Data

Current Fusion time per electrode at 90% I max Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
70-110 A 60 sec 0.8 kg/h (1,8 lb/h) 2.5 x 350.0 mm (0.098 x 13,8 in.) 60 % 76.0 25 V
80-150 A 77 sec 1.5 kg/h (3,3 lb/h) 3.2 x 450.0 mm (1/8 x 17,7 in.) 60 % 37.0 25 V
90-190 A 88 sec 1.8 kg/h (4,0 lb/h) 4.0 x 450.0 mm (5/32 x 17,7 in.) 63 % 26.0 27 V
110-240 A 100 sec 2.1 kg/h (4,6 lb/h) 5.0 x 450.0 mm (0.197 x 17,7 in.) 60 % 15.0 29 V

Classifications

Classifications SFA/AWS A5.5 : E8016-C2
EN ISO 2560-A : E 46 6 3 Ni B 12 H5

Approvals

Approvals DNV-GL 5 Y46H5
RS 5Y46 H5
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Low alloyed (3.5 % Ni)
Coating Type Basic covering
Diffusible Hydrogen < 5.0 ml/100g
Welding Current AC, DC+-

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Mo Ni Si
0.06 % 0.05 % 0.8 % 0.01 % 3.37 % 0.36 %
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Part Numbers and Accessories

Part Numbers : OK 73.79
73792530K0 FIND A DISTRIBUTOR
73793240G0 FIND A DISTRIBUTOR
73794040G0 FIND A DISTRIBUTOR
73795040G0 FIND A DISTRIBUTOR
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