OK 61.81

ESAB

OK 61.81

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OK 61.81 is a rutile Nb-stabilized MMA-electrode for welding Nb- or Ti-stabilized stainless steel of the 19Cr10Ni-type. It has very good resistance against intergranular corrosion. The rather high ferrite content provides a good hot cracking resistance. It has a better hot cracking resistance compared with OK 61.80. Ferrite may transform to brittle phases at elevated temperatures. To avoid excessive embrittlement of the welds the maximum working temperature is limited to 400°C.

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Typical Charpy V-Notch Properties

Impact Value Testing Temperature
as welded aws
60 J (44 ft-lb) 20 degC (68 degF)
as welded iso
71 J (53 ft-lb) -10 degC (14 degF)

Typical Tensile Properties

Condition As Welded As Welded
Shielding Gas ISO AWS
Tensile Strength 700 MPa (102 ksi) 700 MPa (102 ksi)
Yield Strength 550 MPa (80 ksi) 560 MPa (81 ksi)
Elongation 31 %

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 36 sec 1.2 kg/h (2,6 lb/h) 2.5 x 300.0 mm (0.098 x 11,8 in.) 59 % 82 29 V
75-115 A 66 sec 1.2 kg/h (2,6 lb/h) 3.2 x 350.0 mm (1/8 x 13,8 in.) 60 % 44 23 V
80-160 A 66 sec 1.7 kg/h (3,7 lb/h) 4.0 x 350.0 mm (5/32 x 13,8 in.) 60 % 32 24 V
140-210 A 78 sec 2.3 kg/h (5,1 lb/h) 5.0 x 350.0 mm (0.197 x 13,8 in.) 60 % 20 25 V

Classifications

Classifications EN ISO 3581-A : E 19 9 Nb R 3 2
SFA/AWS A5.4 : E347-16
Werkstoffnummer : 1.4551

Approvals

Approvals CE EN 13479
DNV-GL VL 347
NAKS/HAKC 3.2 mm
Approvals are based on factory location. Please contact ESAB for more information.

Consumable Characteristics

Alloy Type Austenitic CrNi
Coating Type Rutile
Ferrite Content FN 6-12
Welding Current DC+, AC

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Cr Mn N Nb Ni Si Si+Fe
0.06 % 20.2 % 1.7 % 0.08 % 0.72 % 9.7 % 0.7 % 7 %
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Part Numbers and Accessories

Part Numbers : OK 61.81
61812020L0 FIND A DISTRIBUTOR
61812520L0 FIND A DISTRIBUTOR
61813230T0 FIND A DISTRIBUTOR
61814030G0 FIND A DISTRIBUTOR
61815030G0 FIND A DISTRIBUTOR
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