OK 67.70
Acid rutile MMA-electrode giving an over alloyed weld metal. Suitable for welding acid resistant stainless steels to mild and low alloyed steels. Also suitable for welding buffer layers when surfacing mild steel with acid resistant stainless steel weld metal.
Typical Charpy V-Notch Properties
| as welded iso | ||||
Typical Tensile Properties
| Condition | Elongation | Shielding Gas | Tensile Strength | Yield Strength |
| As Welded | 32 % | ISO | 610 MPa (88 ksi) | 510 MPa (74 ksi) |
Deposition Data
| Current | Deposition Rate @ 90% I max | Diameter | Deposition Efficiency (%) | Number of electrodes/kg weld metal | Voltage | |
| 40-60 A | 48 sec | 0.6 kg/h (1.3 lb/h) | 2.0 x 300.0 mm (5/64 x 11.8 in.) | 58 % | 147 | 26 V |
| 50-90 A | 45 sec | 0.9 kg/h (2.0 lb/h) | 2.5 x 300.0 mm (0.098 x 11.8 in.) | 57 % | 94 | 29 V |
| 60-120 A | 61 sec | 1.4 kg/h (3.1 lb/h) | 3.2 x 350.0 mm (1/8 x 13.8 in.) | 59 % | 47 | 27 V |
| 85-180 A | 56 sec | 2.0 kg/h (4.4 lb/h) | 4.0 x 350.0 mm (5/32 x 13.8 in.) | 61 % | 32 | 31 V |
| 110-250 A | 64 sec | 2.7 kg/h (6.0 lb/h) | 5.0 x 350.0 mm (0.197 x 13.8 in.) | 59 % | 20 | 30 V |
Classifications
| Classifications |
EN ISO 3581-A : E 23 12 2 L R 3 2 SFA/AWS A5.4 : E309LMo-17 CSA W48 : E309LMo-17 Werkstoffnummer : 1.4459 |
Approvals
| Approvals |
ABS SS to C&C/Mn steels BV 309Mo CE EN 13479 CWB E309LMo-17 DB 30.039.05 DNV-GL VL 309 Mo LR SS/CMn NAKS/HAKC 3.2 mm RINA 309Mo Seproz UNA 272580 VdTÜV 02424 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Austenitic CrNi |
| Coating Type | Acid Rutile |
| Ferrite Content | FN 12-22 |
| Welding Current | DC+, AC |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Mn | Mo | N | Ni | Si | Si+Fe | |||||||
| 0.02 % | 22.5 % | 0.6 % | 2.8 % | 0.09 % | 13.4 % | 0.8 % | 18 % | |||||||
Part Numbers and Accessories
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