OK 68.15

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Mô tả

OK 68.15

OK 68.15 is a stainless-steel electrode which deposits a ferritic 13Cr weld metal. OK 68.15 is designed for welding steels of similar composition, when CrNi-alloyed austenitic stainless steel electrodes cannot be used, e.g. when the structure is going to be exposed to aggressive sulphuric gases. Depending on the welding parameters, the structure and consequently the mechanical properties of untreated weld metal can vary within fairly large limits.

 

Classifications: EN 14700:E Fe7, EN ISO 3581-A:E 13 B 4 2, SFA/AWS A5.4:E410-15,

Werkstoffnummer :1.4009

Approvals: Seproz UNA 272580

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

 

Welding Current: DC+
Alloy Type: 13% Cr
Coating Type: Lime Basic

 

Typical Tensile Properties
Condition Yield Strength Tensile Strength Elongation
AWS
Stress relieved 1 hr 750 °C 370 MPa 520 MPa 25 %

 

Typical Charpy V-Notch Properties
Condition Testing Temperature Impact Value
AWS
Stress relieved 6 hr 750 °C 20 °C 55 J
Stress relieved 6 hr 750 °C 0 °C 35 J
Stress relieved 6 hr 750 °C -20 °C 20 J

 

Typical Weld Metal Analysis %
C Mn Si Ni Cr
0.04 0.3 0.4 0.1 12.9

 

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 350 mm 65-115 A 25 V 0.62 73 48 s 1.0 kg/h
3.2 x 450 mm 90-160 A 25 V 0.63 33 71 s 1.5 kg/h
4.0 x 450 mm 120-220 A 30 V 0.57 24 73 s 2.0 kg/h

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