OK Autrod 347Si
A continuous solid corrosion resisting chromium-nickel wire for welding of austenitic chromium nickel alloys of 18% Cr - 8% Ni-type. OK Autrod 347Si has a good general corrosion resistance. The alloy is stabilized with Niobium to improve the resistance against intergranular corrosion of the weld metal. The higher silicon content improves the welding properties, such as wetting. Due to the niobium content this alloy is recommended for use at higher temperatures.
Typical Charpy V-Notch Properties
| as welded en 98ar/2o2 | ||||
Typical Tensile Properties
| Condition | As Welded | As Welded |
| Shielding Gas | EN 98Ar/2O2 | EN 98Ar/2O2 Tested at 400°C. |
| Tensile Strength | 640 MPa (93 ksi) | 460 MPa (67 ksi) |
| Yield Strength | 440 MPa (64 ksi) | 340 MPa (49 ksi) |
| Elongation | 37 % | 26 % |
Deposition Data
| Current | Deposition Rate | Diameter | Voltage | Wire Feed Speed |
| 100-300 A | 1.6-7.5 kg/h (3.5-16. lb/h) | 1.2 mm (0.047 in.) | 15-29 V | 3.0-14.0 m/min (118-551 in./min) |
| 55-160 A | 1.0-4.1 kg/h (2.2-9.0 lb/h) | 0.8 mm (0.030 in.) | 15-24 V | 4.0-17.0 m/min (157-669 in./min) |
| 230-375 A | 5.2-8.6 kg/h (11.5-19. lb/h) | 1.6 mm (1/16 in.) | 23-31 V | 5.5-9.0 m/min (217-354 in./min) |
| 80-240 A | 1.5-6.0 kg/h (3.3-13. lb/h) | 1.0 mm (0.040 in.) | 15-28 V | 3.5-18.0 m/min (138-709 in./min) |
Classifications
| Wire Electrode |
EN ISO 14343-A : G 19 9 Nb Si SFA/AWS A5.9 : ER347Si Werkstoffnummer : ~1.4551 |
Approvals
| Approvals |
CE EN 13479 DB 43.039.13 NAKS/HAKC 1.0-1.6 mm VdTÜV 09734 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Austenitic (with approx. 8 % ferrite) 19% Cr - 9% Ni - Nb |
| Shielding Gas | M12, M13 (EN ISO 14175) |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Cu | Mn | Mo | Nb | Ni | P | S | Si | |||||
| 0.04 % | 19 % | 0.1 % | 1.7 % | 0.1 % | 0.6 % | 9.8 % | 0.005 % | 0.010 % | 0.7 % | |||||
| Typical Wire Composition % | ||||||||||||||
| 0.04 % | 19 % | 0.10 % | 1.7 % | 0.1 % | 0.60 % | 9.8 % | - | - | 0.7 % | |||||