OK 68.55

ESAB

OK 68.55

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OK 68.55 is a basic coated electrode for welding austenitc-ferritic steels of the Super Duplex type, e. g. SAF 2507 and Zeron 100. OK 68.55 deposits a weld metal with high ductility.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded iso
70 J (52 ft-lb) -20 degC (-4 degF)
55 J (41 ft-lb) -40 degC (-40 degF)
45 J (33 ft-lb) -60 degC (-76 degF)
90 J (67 ft-lb) 20 degC (68 degF)

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Yield Strength
As Welded28 %ISO900 MPa (131 ksi)700 MPa (102 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
50-80 A 48 sec 0.8 kg/h (1,8 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.) 62 % 93 23 V
60-100 A 68 sec 1.1 kg/h (2,4 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 63 % 46 23 V
100-140 A 70 sec 1.6 kg/h (3,5 lb/h) 4.0 x 350.0 mm (5/32 x 13,8 in.) 62 % 32 23 V

Classifications

Classifications Werkstoffnummer : (1.4410)
EN ISO 3581-A : E 25 9 4 N L B 4 2
SFA/AWS A5.4 : E2594-15

Approvals

Grade Duplex
Society DNV-GL
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Austenitic CrNiMo
Coating Type Basic
Ferrite Content FN 35-50
Welding Current DC+

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn Mo N Ni Si Si+Fe
0.03 % 25.2 % 0.9 % 4.3 % 0.23 % 10.4 % 0.6 % 45 %
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Part Numbers and Accessories

Part Numbers : OK 68.55
68552520L0 FIND A DISTRIBUTOR
68553230T0 FIND A DISTRIBUTOR
68554030G0 FIND A DISTRIBUTOR
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