CHARACTERISTICS & APPLICATIONS
ífíl-620 are high iron oxide titania potassium type electrodes. They are characterized by a spray type arc, produce a smooth and flat or slightly concave weld face, and have an easily removable slag. A low viscosity slag limits their usability to horizontal fillets and flat welding positions. With arc penetration ranging from medium to deep (depending upon welding current), these electrodes are best suited for thicker base metal.
ífíl-620 electrodes are recommended for single-pass, high-speed, high-current welding of groove welds in flat welding position, lap joints in horizontal welding position, and fillet welds on sheet metal. The weld face tends to be more convex and less uniform, especially since the welding speeds are higher.
Storage and Drying Conditions: Hydrogen can have adverse effects on welds in some steels under certain conditions. One source of this hydrogen is moisture in the electrode coverings. For this reason, the proper storage, treatment, and handling of electrodes are necessary. Reconditioning of electrodes is recommended when they are damp.
Holding Ovens: 10°C-20°C above ambient temperature (50% max relative humidity). Drying Conditions: 135°C ± 15°C for 1 hour prior to use.
CHEMICAL COMPOSITION OF WELD METAL
| C | Mn | Si | P | S | Ni | Cr | Mo | V | Mn+Ni+Cr+Ni+V |
| 0.20 | 1.20 | 1.00 | NS | NS | 0.30 | 0.20 | 0.30 | 0.08 | NS |
Single values are maxima, except where specified otherwise.
ALL-WELD-METAL MECHANICAL PROPERTIES
| Tensile Strength, MPa | Yield Strength, At 0.2%
Offset, MPa |
Elongation, % | Charpy V-Notch Impact at
NS°C, Joules |
| 430 | 330 | 22 | NS |
Single values are minimal.
ELECTRODE SIZE & WELDING CURRENT
| Diameter, mm | Length, mm | AC, DCEN or DCEP, Amperes |
| 3.15, 3.20 | 450 | 100-150 |
| 4.00 | 450 | 130-190 |
| 5.00 | 450 | 175-250 |
WARNING: Safety and health information is available from many sources, including, but not limited to Safety and Health Fact Sheets listed in A11.3, ANSI Z49.1 Safety in Welding, Cutting, and Allied Processes published by the American Welding Society, 8669 Doral Blvd., Suite 130, Doral, FL 33166., and applicable federal and state regulations. The Safety and Health Fact Sheets are revised, and additional sheets added periodically.