OK 61.85

Mô tả

OK 61.85

Nb-stabilized basic coated electrode designed for welding of Nb- or Ti-stabilized stainless steels of the 19Cr10Ni-type. OK 61.85 provides the best hot cracking resistance of the products belonging to the 347 range. Due to the relatively high ferrite content level, the maximum working temperature should be limited to 400°C.

 

Classifications:	Werkstoffnummer :1.4551, EN ISO 3581-A:E 19 9 Nb B 2 2, SFA/AWS A5.4:E347-15
Approvals:	Seproz UNA 272580, NAKS/HAKC 2.5-4.0 mm, VdTÜV 05663

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

 

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

 

Typical Tensile Properties
Condition	Yield Strength	Tensile Strength	Elongation
ISO
As welded	500 MPa	620 MPa	40 %
Stress relieved 16 hr 600 °C	500 MPa	640 MPa	40 %

 

Typical Charpy V-Notch Properties
Condition	Testing Temperature	Impact Value
ISO
As welded	20 °C	100 J
As welded	-60 °C	70 J
Stress relieved 16 hr 600 °C	20 °C	80 J
Stress relieved 16 hr 600 °C	-60 °C	40 J

 

Typical Weld Metal Analysis %
C	Mn	Si	Ni	Cr	N	Nb	Ferrite FN
0.04	1.7	0.4	10.2	19.5	0.07	0.61	6

 

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	55-80 A	25 V	0.60	98	42 s	0.9 kg/h
3.2 x 350 mm	75-110 A	23 V	0.62	49	64 s	1.2 kg/h
4.0 x 350 mm	80-150 A	24 V	0.61	33	70 s	1.6 kg/h