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
Documents
Typical Weld Metal Analysis %
| Weld Metal Analysis | ||||||||||
| Element | S | P | Mn | C | Mn | Si | S | C | Si | P |
| Nominal Percentage | 0.01 % | 0.02 % | 1.80 % | 0.07 % | 1.80 % | 1.00 % | 0.01 % | 0.07 % | 0.90 % | 0.03 % |
| Wire | Spoolarc 81 | Spoolarc 29S | Spoolarc 81 | Spoolarc 29S | Spoolarc 29S | Spoolarc 29S | Spoolarc 29S | Spoolarc 81 | Spoolarc 81 | Spoolarc 81 |
Classifications
| AWS - As Welded | F7A0-EM13K |
| AWS/EN | AWS A5.17: EM13K |
| Wire | Spoolarc 29S |
| AWS - As Welded | F7A0-EM12K |
| AWS/EN | AWS A5.17: EM12K |
| Wire | Spoolarc 81 |
Classifications
| Name | ASME SFA 5.17 |
| Grade | F7AO-EM12K |
| Name | AWS A5.17 |
| Grade | F7AO-EM13K |
| Name | AWS A5.17 |
Typical Mechanical Properties
| Charpy V-Notch (imp) | 23 ft-lb |
| Charpy V-Notch (met) | 31 J |
| Elongation | 22 % |
| Tensile Strength (imp) | 99 ksi |
| Tensile Strength (met) | 680 MPa |
| Testing Condition | 1 |
| Wire | Spoolarc 29S |
| Yield Strength (imp) | 89 ksi |
| Yield Strength (met) | 615 MPa |
| Charpy V-Notch (imp) | 28 ft-lb |
| Charpy V-Notch (met) | 20 J |
| Elongation | 25 % |
| Tensile Strength (imp) | 92 ksi |
| Tensile Strength (met) | 635 MPa |
| Testing Condition | 1 |
| Wire | Spoolarc 81 |
| Yield Strength (imp) | 78 ksi |
| Yield Strength (met) | 540 MPa |