OK 67.55

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Mô tả

OK 67.55

OK 67.55 is a basic coated electrode especially designed for welding duplex stainless steels i, e. UNS S31803. The deposited weld metal gives very high ductility down to -50°C/-60°C. Particularly suitable for welding duplex pipes in offshore applications.

 

Classifications: Werkstoffnummer :1.4462, EN ISO 3581-A:E 22 9 3 N L B 2 2, SFA/AWS A5.4:E2209-15
Approvals: Seproz UNA 272580, DNV For duplex SS, VdTÜV 06774

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

 

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

 

Typical Tensile Properties
Condition Yield Strength Tensile Strength Elongation
ISO
As welded 650 MPa 800 MPa 28 %

 

Typical Charpy V-Notch Properties
Condition Testing Temperature Impact Value
ISO
As welded 20 °C 100 J
As welded -20 °C 85 J
As welded -40 °C 75 J
As welded -60 °C 65 J

 

Typical Weld Metal Analysis %
C Mn Si Ni Cr Mo N Ferrite FN
0.04 1.0 0.7 9.1 23.2 3.2 0.15 41

 

Deposition Data
Diameter Current Voltage kg weld metal/ kg electrodes Number of electrodes/kg weld metal Fusion time per electrode at 90% I max Deposition rate 90% I max
2.5 x 300 mm 50-80 A 23 V 0.59 96 49 s 0.8 kg/h
3.2 x 350 mm 65-115 A 24 V 0.59 50 61 s 1.2 kg/h
4.0 x 350 mm 80-140 A 24 V 0.60 33 74 s 1.5 kg/h

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