Exaton 309LNb
309LNb is a niobium-stabilized overalloyed filler metal suitable for overlay welding of carbon and low alloy steels, where a type 347 of overlay is required. It is used for MIG/MAG welding.
Typical Charpy V-Notch Properties
| as welded | ||||
Typical Tensile Properties
| Condition | Elongation | Tensile Strength | Yield Strength |
| As Welded | 29 % | 670 MPa (97 ksi) | 500 MPa (73 ksi) |
Recommended Welding Parameters
| Current | Voltage | Wire Diameter | Wire Feed Speed | |
| 60-220 A | 15-28 V | 1.0 mm (0.040 in.) | 4.0-12.0 m/min (157-472 in./min) | |
| 150-260 A | 24-29 V | 1.2 mm (0.047 in.) | 3.0-10.0 m/min (118-394 in./min) | |
Classifications
| Wire Electrode |
SFA/AWS A5.9 : ER 309LNb EN ISO 14343-A : G 23 12 Nb |
Consumable Characteristics
| Alloy Type | Austenitic (with approx. 15 % ferrite) 24 % Cr - 13 % Ni - Low C - Nb |
| Shielding Gas | M12, M13 (EN ISO 14175) |
Typical Weld Metal Analysis %
| Typical Wire Composition % | ||||||||||||||
| C | Co | Cr | Cu | FN deLong | Mn | Mo | N | Nb | Ni | P | S | Si | Ti | |
| 0.01 % | 0.02 % | 24 % | 0.01 % | - | 2.1 % | 0.02 % | 0.05 % | 0.8 % | 12.5 % | 0.013 % | 0.001 % | 0.3 % | 0.005 % | |
| Typical Weld Metal Analysis % | ||||||||||||||
| 0.02 % | 0.02 % | 23.2 % | 0.01 % | 13 % | 2.2 % | 0.01 % | 0.07 % | 0.8 % | 12.5 % | 0.012 % | 0.001 % | 0.2 % | - | |
Part Numbers and Accessories
ESAB EQUIPMENT WARRANTIES ARE VALID ONLY WHEN PURCHASED THROUGH AN ESAB AUTHORIZED DEALERSHIP.