OK 68.53
OK 68.53 is a coated electrode for welding austenitic-ferritic steels of Super Duplex types, e.g. SAF 2507 and Zeron 100. OK 68.53 has good welding characteristics in all positions and the slag is easily detachable.
Typical Charpy V-Notch Properties
| Impact Value | Testing Temperature | |||
| as welded iso | ||||
| 40 J (30 ft-lb) | -40 degC (-40 degF) | |||
| 50 J (37 ft-lb) | 20 degC (68 degF) | |||
Typical Tensile Properties
| Condition | Elongation | Shielding Gas | Tensile Strength | Yield Strength |
| As Welded | 30 % | ISO | 850 MPa (123 ksi) | 700 MPa (102 ksi) |
Deposition Data
| Current | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage | |
| 55-85 A | 43 sec | 0.9 kg/h (2,0 lb/h) | 2.5 x 300.0 mm (0.098 x 11,8 in.) | 60 % | 94 | 22 V |
| 70-110 A | 62 sec | 1.2 kg/h (2,6 lb/h) | 3.2 x 350.0 mm (1/8 x 13,8 in.) | 60 % | 47 | 22 V |
| 80-150 A | 67 sec | 1.7 kg/h (3,7 lb/h) | 4.0 x 350.0 mm (5/32 x 13,8 in.) | 60 % | 32 | 23 V |
Classifications
| Classifications |
EN ISO 3581-A : E 25 9 4 N L R 32 SFA/AWS A5.4 : E2594-16 Werkstoffnummer : (1.4410) |
Approvals
| Approvals |
CE EN 13479 DNV-GL Duplex VdTÜV 07377 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Austenitic-ferritic CrNiMo |
| Coating Type | Basic Rutile |
| Ferrite Content | FN 35-50 |
| Welding Current | DC+, AC |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Mo | N | Ni | Si | Si+Fe | ||||||||
| 0.03 % | 25.2 % | 4 % | 0.25 % | 10.3 % | 0.6 % | 39 % | ||||||||
Part Numbers and Accessories
ESAB EQUIPMENT WARRANTIES ARE VALID ONLY WHEN PURCHASED THROUGH AN ESAB AUTHORIZED DEALERSHIP.