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SAE7
Extra low hydrogen - Moisture resistant steel electrode for unalloyed construction steels
- Flexible flux coating allows bending of the electrode.
- Extremely smooth - spatter and turbulence free arc transfer.
- Coating is totally non-conductive.
- Unusually good AC welding characteristics.
- Easy re-strike.
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| International Specifications | AWS/ASME IIC SFA 5.1 E7018
DIN 1913 E51 54B (R) 10
ISO 2560 E51 5B110 24H |
APPLICATIONS:
For joining and repairing boiler plate, pipe steels, shipbuilding steels and cast steels. Excellent for weathering steels, such as "Corten".
MICROSTRUCTURE:
In the stress-relieved condition, the microstructure consists of acicular ferrite with some tempered bainite.
TYPICAL MECHANICAL PROPERTIES:
| Undiluted Weld Metal |
Maximum Value Up to: |
|---|
| Tensile Strength | 84,000 psi |
| Yield Strength | 69,000 psi |
| Elongation | 32% |
| Impact Energy | 90J: -30oC |
RECOMMENDED CURRENT: DC Reverse (+) or AC
RECOMMENDED AMPERAGE SETTINGS:
| Diameter (mm) |
3/32 (2/5) | 1/8 (3.25) | 5/32 (4.0) | 3/16 (5.0) |
|---|
| Minimum Amperage | 65 | 100 | 140 | 190 |
| Maximum Amperage | 100 | 140 | 190 | 250 |
WELDING POSITIONS: Flat, Vertical up, Vertical down, Horizontal, Overhead
WELDING TECHNIQUES:
Remove all surface contaminants. Maintain a short arc gap and use a stringer or slight weave technique. Chip slag thoroughly between passes.
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