OK Autrod 312
A continous solid corrosion resisting chromium-nickel wire for welding of stainless steels of the 29% Cr, 9% Ni types. OK Autrod 312 has a good oxidation resistance at high temperatures due to its high content of Cr. The alloy is widely used for joining dissimilar steels especially if one of the component is fully austenitic and steels that are difficult to weld, i e machine components, tools, austenitic manganese steels.
Typical Charpy V-Notch Properties
| As Welded | |
| Impact Value | 37 ft-lb |
| Impact Value | 50 J |
| Testing Temperature | 68 °F |
| Testing Temperature | 20 °C |
Typical Tensile Properties
| Condition | Elongation | Tensile Strength | Yield Strength |
| As Welded | 20 % | 770 MPa (112 ksi) | 610 MPa (88 ksi) |
Deposition Data
| Current | Deposition Rate | Diameter | Voltage | Wire Feed Speed |
| 50-140 A | 0.8-2.7 kg/h (1.8-6.0 lb/h) | 0.8 mm (0.030 in.) | 16-22 V | 3.4-11.0 m/min (134-433 in./min) |
| 80-190 A | 1.1-3.1 kg/h (2.4-6.8 lb/h) | 1.0 mm (0.040 in.) | 16-24 V | 2.9-8.4 m/min (114-331 in./min) |
| 180-280 A | 2.6-4.5 kg/h (5.7-9.9 lb/h) | 1.2 mm (0.047 in.) | 20-28 V | 4.9-8.5 m/min (193-335 in./min) |
Classifications
| Wire Electrode |
EN ISO 14343-A : G 29 9 SFA/AWS A5.9 : ER312 |
Consumable Characteristics
| Alloy Type | Ferritic-austenitic (29 % Cr - 9 % Ni) |
| Shielding Gas | M12, M13 (EN ISO 14175) |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Cr | Cu | Mn | Mo | Ni | P | S | Si | ||||||
| 0.1 % | 29 % | - | 1.7 % | - | 9 % | 0.020 % | 0.010 % | 0.5 % | ||||||
| Typical Wire Composition % | ||||||||||||||
| 0.10 % | 30.7 % | 0.14 % | 1.6 % | 0.20 % | 8.8 % | - | - | 0.4 % | ||||||