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 Tensile Properties
| As welded | ||
| Elongation | Tensile Strength | Yield Strength |
| 30 % | 123 ksi | 101.5 ksi |
Typical Charpy V-Notch Properties
| As welded | |
| Impact Value | Testing Temperature |
| 37 ft-lb | 68 °F |
| 29.5 ft-lb | -40 °F |
Typical Weld Metal Analysis %
| weld metal analysis | ||||||
| Mo | C | Si | Ferrite FN | Ni | N | Cr |
| 4 % | 0.03 % | 0.6 % | 39 % | 10.3 % | 0.25 % | 25.2 % |
| Approvals: | CE; EN 13479; DNV-GL; Duplex; VdTÜV; 07377 |
| Classifications: | EN ISO 3581-A; E 25 9 4 N L R 32; SFA/AWS A5.4; E2594-16; Werkstoffnummer; (1.4410) |
Approvals are based on factory location. Please contact ESAB for more information.
| Alloy Type: | Austenitic-ferritic CrNiMo |
| Coating Type: | Basic Rutile |
| Ferrite Content: | FN 35-50 |
| Welding Current: | DC+, AC |