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.


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 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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How to purchase OK 73.79

We're as eager to put ESAB gear in your hands as you are to have it.  That's why we sell our products with distributors who'll give you the attention, support, and value you deserve.  Their expertise will make sure that you're as happy with the purchasing process as we know you'll be with your purchase itself.

To make things even easier, we've developed the online shopping list below.  As you browse our site, you'll be able to click on any product to have it added to this easy reference sheet.  And when you're done, you can send the list to yourself or print it out and bring it in to the distributor of your choice.

To find an ESAB distributor, just use the distributor locator tool featured on every page of our site.  Alternatively, you can call our support line at +361 382 1235 and we'll point you in the right direction.


Part Numbers and Accessories

Part Numbers : OK 73.79
73792530K0
73793240G0
73794040G0
73795040G0
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