OK Flux 281
OK Flux 281 is an active flux intended for welding gauge thickness and thin steel plate(up to 3/8 in. thick) for butt, lap and fillet welds. Due to the excellent operating characteristics, quality welds with self-peeling slag and free from undercut may be achieved with welding speeds ranging from 50 to 100 inches per minute. *Single pass application only. Any mechanical property and undiluted weld chemistry listed are for information only.
Industries
- Pipe Construction
- Railcars
- Tank and Vessel Fabrication
- Metal Beam Fabrication
Welding Process
- SAW - Submerged Arc Welding
Classifications
| Classifications |
ASME SFA 5.17 : AWS A5.17 : F7AO-EM12K AWS A5.17 : F7AO-EM13K |
Classifications
| Wire | AWS/EN | AWS - As Welded |
| Spoolarc 29S | AWS A5.17: EM13K | F7A0-EM13K |
| Spoolarc 81 | AWS A5.17: EM12K | F7A0-EM12K |
Typical Mechanical Properties
| Combined with Wire | Condition | Yield Strength | Tensile Strength | Charpy V-Notch | Elongation |
| Spoolarc 29S | As Welded null | 615 MPa (89 ksi) |
680 MPa (99 ksi) |
31 J, (23 ft-lb) |
22 % |
| Spoolarc 81 | As Welded null | 540 MPa (78 ksi) |
635 MPa (92 ksi) |
20 J, (28 ft-lb) |
25 % |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | P | S | Si | ||||||||||
| Spoolarc 29S | ||||||||||||||
| 0.07 % | 1.80 % | 0.02 % | 0.01 % | 1.00 % | ||||||||||
| Spoolarc 81 | ||||||||||||||
| 0.07 % | 1.80 % | 0.03 % | 0.01 % | 0.90 % | ||||||||||
Part Numbers and Accessories
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