OK 73.15

ESAB

OK 73.15

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OK 73.15 is a basic electrode with very good welding characteristics. Its exceptional weldability is ideal for multiple applications including Pipe. The electrode has a classification of AWS 8018-C3 H4R and gives a weld metal alloyed with about 0.9% Ni. It fulfils impact requirements down to - 50 °C. The low moisture absorption coating gives less than 4 ml diffusible hydrogen / 100 g welded metal. Weld metal recovery is above 120 % for the main diameters. OK 73.15 is HIC test compliant as per NACE TM0284 & SSC test compliant as per NACE TM0177.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded aws
90 J (67 ft-lb) -40 degC (-40 degF)
70 J (52 ft-lb) -50 degC (-58 degF)
60 J (44 ft-lb) -60 degC (-76 degF)
pwht aws
70 J (52 ft-lb) 10 hr 620 degC (1148 degF) -40 degC (-40 degF)
70 J (52 ft-lb) 1 hr 620 degC (1148 degF) -50 degC (-58 degF)
60 J (44 ft-lb) 6 hr 620 degC (1148 degF) -50 degC (-58 degF)
50 J (37 ft-lb) 10 hr 620 degC (1148 degF) -50 degC (-58 degF)
50 J (37 ft-lb) 6 hr 620 degC (1148 degF) -60 degC (-76 degF)

Typical Tensile Properties

Condition As Welded PWHT PWHT PWHT
Shielding Gas AWS AWS AWS AWS
Tensile Strength 600 MPa (87 ksi) 580 MPa (84 ksi) 580 MPa (84 ksi) 590 MPa (86 ksi)
Yield Strength 500 MPa (73 ksi) 500 MPa (73 ksi) 490 MPa (71 ksi) 500 MPa (73 ksi)
Elongation 29 % 27 % 27 % 27 %
Testing Time 1 hr 6 hr 10 hr
Testing Temperature 620 degC (1148 degF) 620 degC (1148 degF) 620 degC (1148 degF)

Deposition Data

Current Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
65-110 A 57 sec 0.9 kg/h (2.0 lb/h) 2.5 x 350.0 mm (0.098 x 13.8 in.) 60 % 69 20 V
85-150 A 63 sec 1.3 kg/h (2.9 lb/h) 3.2 x 350.0 mm (1/8 x 13.8 in.) 63 % 45 22 V
85-150 A 64 sec 1.3 kg/h (2.9 lb/h) 3.2 x 450.0 mm (1/8 x 17.7 in.) 63 % 43 22 V
115-190 A 93 sec 1.8 kg/h (4.0 lb/h) 4.0 x 350.0 mm (5/32 x 13.8 in.) 65 % 22 25 V
115-190 A 95 sec 1.8 kg/h (4.0 lb/h) 4.0 x 450.0 mm (5/32 x 17.7 in.) 66 % 21 25 V
155-280 A 93 sec 2.7 kg/h (6.0 lb/h) 5.0 x 450.0 mm (0.197 x 17.7 in.) 66 % 14 28 V

Classifications

Classifications SFA/AWS A5.5 : E8018-C3 H4R
EN ISO 2560-A : E 46 5 1Ni B 4 2 H5

Approvals

Approvals ABS 3Y H5
DNV-GL 4 Y46H5
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Low alloyed (0.9 % Ni)
Coating Type Basic covering
Diffusible Hydrogen < 4.0 ml/100g
Welding Current DC+(-)

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Mo Ni P S Si V
0.07 % 0.08 % 1.10 % 0.15 % 0.90 % 0.009 % 0.014 % 0.35 % 0.01 %
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Part Numbers and Accessories

Part Numbers : OK 73.15
73152531G0 FIND A DISTRIBUTOR
73152530K0 FIND A DISTRIBUTOR
73153240G0 FIND A DISTRIBUTOR
73153241G0 FIND A DISTRIBUTOR
73153231G0 FIND A DISTRIBUTOR
73154031G0 FIND A DISTRIBUTOR
73154040G0 FIND A DISTRIBUTOR
73154041G0 FIND A DISTRIBUTOR
73155040G0 FIND A DISTRIBUTOR
73155041G0 FIND A DISTRIBUTOR
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