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ESAB

OK 61.81

OK 61.81

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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Specifications


Typical Tensile Properties

ISO As welded
Tensile Strength Yield Strength Elongation
700 MPa 550 MPa -
AWS As welded
Tensile Strength Yield Strength Elongation
700 MPa 560 MPa 31 %
AWS Creep resistance++ 500°C 10000h
Tensile Strength Yield Strength Elongation
330 MPa - -
AWS Creep resistance+ 500°C 20000h
Tensile Strength Yield Strength Elongation
310 MPa - -
AWS Creep resistance 600°C 10000h
Tensile Strength Yield Strength Elongation
135 MPa - -

Charpy V-Notch Properties

ISO As welded
Impact Value Testing Temperature
71 J -10 °C
AWS As welded
Impact Value Testing Temperature
60 J 20 °C

Weld Metal Analysis

MnCNbSiFerrite FNNiNCr
1.7 %0.06 %0.72 %0.7 %7 %9.7 %0.08 %20.2 %

Approvals: CE, EN 13479, DNV-GL, VL 347, NAKS/HAKC, 3.2 mm
Classifications: EN ISO 3581-A, E 19 9 Nb R 3 2, SFA/AWS A5.4, E347-16, Werkstoffnummer, 1.4551

Approvals are based on factory location. Please contact ESAB for more information.


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