ífíl-69 are iron oxide titania potassium type all-position electrodes, although very like ífíl-63, have distinct differences. These electrodes, with a rather fluid slag system, provide deeper arc penetration and produce weld metal that meets a 22% minimum elongation requirement, meets the Grade 1 radiographic standards, and has average impact strength of 27J when tested at –20°C. These electrodes are suitable for multi-pass welding of up to 25 mm thick steel. They are designed for use with ac, dcen, or dcep. While 5.0 mm] and smaller diameter electrodes can be used for all welding positions (except vertical welding position with downward progression), the use of larger diameter electrodes should be limited to flat or horizontal fillet welding position. When welding in the vertical welding position with upward progression, weaving should be limited to minimize undercut.
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 0°C, Joules |
|
430 |
330 |
17 |
47 |
Single values are minimal.
ELECTRODE SIZE & WELDING CURRENT
|
Diameter, mm |
Length, mm |
AC, DCEN or DCEP, Amperes |
|
2.50 |
350 |
50-90 |
|
3.15, 3.20 |
450 |
80-140 |
|
4.00 |
450 |
130-190 |
|
5.00 |
450 |
190-250 |
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.
