OK Autrod 318Si
A continuous solid corrosion resisting stabilized chromium-nickel-molybdenium wire for welding of Cr-Ni-Mo and Cr-Ni stabilized or non-stabilized steels. OK Autrod 318Si 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 stabilization of niobium this alloy is recommended for service temperatures up to 400 °C.
Typical Charpy V-Notch Properties
| as welded | ||||
Typical Tensile Properties
| Condition | As Welded | As Welded |
| Shielding Gas | Tested at 400°C. | |
| Tensile Strength | 615 MPa (89 ksi) | 540 MPa (78 ksi) |
| Yield Strength | 460 MPa (67 ksi) | 400 MPa (58 ksi) |
| Elongation | 35 % | 35 % |
Deposition Data
| Current | Deposition Rate | Diameter | Voltage | Wire Feed Speed |
| 80-240 A | 1.5-6.0 kg/h (3.3-13. lb/h) | 1.0 mm (0.040 in.) | 15-28 V | 4.0-16.0 m/min (157-630 in./min) |
| 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) |
Classifications
| Wire Electrode |
EN ISO 14343-A : G 19 12 3 Nb Si Werkstoffnummer : ~1.4576 SFA/AWS A5.9 : ER318 (mod) |
Approvals
| Approvals |
CE EN 13479 DB 43.039.14 NAKS/HAKC 1.2MM VdTÜV 09735 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Type | Austenitic (with approx. 7 % ferrite) 19% Cr - 12% Ni - 3 % Mo - 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 % | 1.3 % | 2.8 % | 0.7 % | 12 % | 0.015 % | 0.010 % | 0.8 % | |||||
| Typical Wire Composition % | ||||||||||||||
| 0.05 % | 18.8 % | 0.10 % | 1.7 % | 2.60 % | 0.50 % | 11.9 % | - | - | 0.8 % | |||||
Part Numbers and Accessories
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