CHARACTERISTICS & APPLICATIONS
ífíl-7241 is iron powder, titania type electrodes characterized by low penetrating arc and dense slag, which completely covers the bead. This may result in incomplete root penetration in fillet welded joints. The coverings are high in titania, and usually are referred to as the “titania” or “rutile” type. ífíl-7241 electrode coverings contain substantial amounts of iron powder in combination with other ingredients. The coverings on these electrodes are very thick and usually amount to about 50% of the weight of the electrode, resulting in higher deposition efficiency. These electrodes are well suited for making fillet welds in flat or horizontal position. The weld face is slightly convex to flat, with an exceptionally smooth surface and an exceptionally fine ripple. These electrodes are characterized by a smooth, quiet arc, exceptionally low spatter, and low arc penetration. They can be used with high travel speeds. These electrodes can be operated on ac, dcep, or dcen. They are intended for use in situations requiring greater ductility and a lower transition temperature than normally is available from ífíl-724 electrodes.
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 |
| 0.15 | 1.25 | 0.90 | 0.035 | 0.035 | 0.30 | 0.20 | 0.30 | 0.08 | 1.50 |
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
-20°C, Joules |
| 490 | 400 | 22 | 27 |
Single values are minimal.
ELECTRODE SIZE & WELDING CURRENT
| Diameter, mm | Length, mm | AC, DCEN or DCEP, Amperes |
| 2.50 | 350 | 100-145 |
| 3.15, 3.20 | 450 | 140-190 |
| 4.00 | 450 | 180-250 |
| 5.00 | 450 | 230-305 |
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.