OK 68.53

ESAB

OK 68.53

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OK 68.53 is a coated electrode for welding austenitic-ferritic steels of Super Duplex types, e.g. SAF 2507 and Zeron 100. OK 68.53 has good welding characteristics in all positions and the slag is easily detachable.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded iso
40 J (30 ft-lb) -40 degC (-40 degF)
50 J (37 ft-lb) 20 degC (68 degF)

Typical Tensile Properties

ConditionElongationShielding GasTensile Strength Yield Strength
As Welded30 %ISO850 MPa (123 ksi)700 MPa (102 ksi)

Deposition Data

Current Deposition Rate @ 90% I max Diameter Deposition Efficiency (%) Number of electrodes/kg weld metal Voltage
55-85 A 43 sec 0.9 kg/h (2,0 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.) 60 % 94 22 V
70-110 A 62 sec 1.2 kg/h (2,6 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 60 % 47 22 V
80-150 A 67 sec 1.7 kg/h (3,7 lb/h) 4.0 x 350.0 mm (5/32 x 13,8 in.) 60 % 32 23 V

Classifications

Classifications EN ISO 3581-A : E 25 9 4 N L R 32
SFA/AWS A5.4 : E2594-16
Werkstoffnummer : (1.4410)

Approvals

Approvals CE EN 13479
DNV-GL Duplex
VdTÜV 07377
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

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

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mo N Ni Si Si+Fe
0.03 % 25.2 % 4 % 0.25 % 10.3 % 0.6 % 39 %
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Part Numbers and Accessories

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Part Numbers : OK 68.53
68532520L0 FIND A DISTRIBUTOR
68533230T0 FIND A DISTRIBUTOR
68534030G0 FIND A DISTRIBUTOR

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