OK 61.85
OK 61.85 is a basic Nb-stabilized electrode designed for welding of Nb- or Ti-stabilized stainless steels of the 19Cr10Ni-type. It has very good resistance against intergranular corrosion. OK 61.85 provides the best hot cracking resistance of the E347 type electrodes due to the combination of the high ferrite content level and the basic coating. 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.
Typical Charpy V-Notch Properties
| Impact Value | Testing Temperature | |||
| as welded iso | ||||
| -120 degC (-184 degF) | ||||
| 70 J (52 ft-lb) | -60 degC (-76 degF) | |||
| 100 J (74 ft-lb) | 20 degC (68 degF) | |||
| stress relieved iso | ||||
| 40 J (29.5 ft-lb) | 16 hr | 600 degC (1112 degF) | -60 degC (-76 degF) | |
| 80 J (59 ft-lb) | 16 hr | 600 degC (1112 degF) | 20 degC (68 degF) | |
Typical Tensile Properties
| Condition | As Welded | Stress Relieved |
| Shielding Gas | ISO | ISO |
| Tensile Strength | 620 MPa (90 ksi) | 640 MPa (93 ksi) |
| Yield Strength | 500 MPa (73 ksi) | 500 MPa (73 ksi) |
| Elongation | 40 % | 40 % |
| Testing Time | 16 hr | |
| Testing Temperature | 600 degC (1112 degF) |
Deposition Data
| Current | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage | |
| 55-80 A | 42 sec | 0.9 kg/h (2,0 lb/h) | 2.5 x 300.0 mm (0.098 x 11,8 in.) | 60 % | 98 | 25 V |
| 75-110 A | 64 sec | 1.2 kg/h (2,6 lb/h) | 3.2 x 350.0 mm (1/8 x 13,8 in.) | 62 % | 49 | 23 V |
| 80-150 A | 70 sec | 1.6 kg/h (3,5 lb/h) | 4.0 x 350.0 mm (5/32 x 13,8 in.) | 61 % | 33 | 24 V |
| 150-200 A | 76 sec | 2.3 kg/h (5,1 lb/h) | 5.0 x 350.0 mm (0.197 x 13,8 in.) | 61 % | 21 | 23 V |
Classifications
| Classifications |
Werkstoffnummer : 1.4551 EN ISO 3581-A : E 19 9 Nb B 2 2 SFA/AWS A5.4 : E347-15 |
Approvals
| Approvals |
NAKS/HAKC 2.5-5.0 mm Seproz UNA 272580 VdTÜV 05663 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Austenitic CrNi |
| Coating Type | Basic |
| Ferrite Content | FN 6-12 |
| Welding Current | DC+ |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Mn | N | Nb | Ni | Si | Si+Fe | |||||||
| 0.04 % | 19.5 % | 1.7 % | 0.07 % | 0.61 % | 10.2 % | 0.4 % | 6 % | |||||||
Part Numbers and Accessories
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