OK 68.81
High alloy stainless electrode of unusual versatility, giving a ferritic-austenitic duplex weld metal with an approximate ferrite content of FN 40. The weld metal is resistant to stress corrosion attack and highly insensitive to dilution by melted parent metal. Applications: joining of HWT steels, dissimilar steels, surfacing rails, rolls, alforging dies, hot work tools, dies for plastics etc. Good scaling resistance up to 1150 °C.
Typical Charpy V-Notch Properties
| As Welded | |
| Impact Value | 22 ft-lb |
| Impact Value | 30 J |
| Shielding Gas | AWS |
| Testing Temperature | 68 °F |
| Testing Temperature | 20 °C |
Typical Tensile Properties
| Condition | Elongation | Shielding Gas | Tensile Strength | Yield Strength |
| As Welded | 25 % | AWS | 790 MPa (115 ksi) | 610 MPa (88 ksi) |
Deposition Data
| Current | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage | |
| 40-60 A | 41 sec | 0.7 kg/h (1.5 lb/h) | 2.0 x 300.0 mm (5/64 x 11.8 in.) | 64 % | 123 | 22 V |
| 50-85 A | 48 sec | 0.9 kg/h (2.0 lb/h) | 2.5 x 300.0 mm (0.098 x 11.8 in.) | 64 % | 78 | 24 V |
| 60-125 A | 65 sec | 1.3 kg/h (2.9 lb/h) | 3.2 x 350.0 mm (1/8 x 13.8 in.) | 62 % | 42 | 25 V |
| 80-175 A | 66 sec | 2.0 kg/h (4.4 lb/h) | 4.0 x 350.0 mm (5/32 x 13.8 in.) | 62 % | 26 | 26 V |
| 150-240 A | 68 sec | 3.2 kg/h (7.1 lb/h) | 5.0 x 350.0 mm (0.197 x 13.8 in.) | 65 % | 17 | 28 V |
Classifications
| Classifications |
EN 14700 : E Fe11 EN ISO 3581-A : E 29 9 R 3 2 SFA/AWS A5.4 : E312-17 Werkstoffnummer : 1.4337 |
Approvals
| Approvals |
CE EN 13479 Seproz UNA 272580 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Stainless duplex |
| Coating Type | Acid Rutile |
| Ferrite Content | FN 30 - 50 |
| Welding Current | DC+, AC |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Mn | Mo | N | Ni | Si | Si+Fe | |||||||
| 0.13 % | 28.9 % | 0.9 % | 0.04 % | 0.09 % | 10.2 % | 0.7 % | 40 % | |||||||
Part Numbers and Accessories
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