OK Flux 10.72
OK Flux 10.72 is an agglomerated, basic flux, designed for the production of wind towers. It combines the high demands for multi-layer thick section welding, using high deposition rates with respectable toughness values down to -50°C when combined with a standard non-alloyed SAW wire. It is used for single and multi-wire procedures such as tandem, twin arc, tandem-twin welding and many more, for butt and fillet welds. It works equally well on DC and AC current. The excellent slag removal in narrow V-joints allows the included angle of the joint to be reduced. OK Flux 10.72 can be applied for unlimited plate thicknesses. In wind tower production, plate thicknesses of 50 mm and above are common, generally welded with Y-joints. It is essential that the slag is easily removable on the first run. For the remaining filling passes the flux needs to offer a high current carrying capacity, to allow for high deposition rates, for example, 38 kg/h with the tandem twin process. Often toughness values down to -50°C are required throughout the thickness. This excellent flux can also be utilised in other market segments with similar welding requirements e.g. pressure vessels and general construction welding.
Classifications
| Grade | S A AB 1 57 AC H5 |
| Name | EN ISO 14174 |
Approvals
| Approvals |
CE EN 13479 DB 51.039.12 |
| Approvals are based on factory location. Please contact ESAB for more information. |
Consumable Characteristics
| Alloy Transfer | No Silicon and moderately Manganese alloying |
| Basicity Index | nom: 1.9 |
| Density | nom: 1.2 kg/dm3 |
| Diffusible Hydrogen | max 5 ml H/100g weld metal (Redried flux) |
| Grain Size | 0.315-2.0 mm (9x48 mesh) |
| Slag Type | Aluminate-basic |
Flux Consumption
| Volts | kg Flux / kg Wire DC+ | kg Flux / kg Wire AC |
| 26 V | 0.7 kg | 0.6 kg |
| 30 V | 1.0 kg | 0.9 kg |
| 34 V | 1.3 kg | 1.2 kg |
| 38 V | 1.6 kg | 1.4 kg |
| Amps | Dimensions | Travel Speed |
| 580 A | Ø 4.0 mm | 55 cm/min |
Classifications
| Wire | SFA/AWS - EN ISO | EN - As Welded | AWS - As Welded | AWS - PWHT |
| OK Autrod 12.24 | A5.23:EA2/ 14171-A:S2Mo; 24598-A:S S Mo | 14171-A: S 46 3 AB S2Mo | A5.23: F8A5-EA2-A3 | A5.23: F8P5-EA2-A3 |
| OK Autrod 12.22 | A5.17:EM12K/ 14171-A:S2Si | 14171-A: S 38 5 AB S2Si | A5.17: F7A8-EM12K | A5.17: F6P8-EM12K |
| OK Autrod 13.27 | A5.23:ENi2/ 14171-A:S2Ni2 | 14171-A: S 46 6 AB S2Ni2 | A5.23: F8A8-ENi2-Ni2 | A5.23: F7P8-ENi2-Ni2 |
| OK Autrod 12.20 | A5.17:EM12/ 14171-A:S2 | 14171-A: S 38 5 AB S2 | A5.17: F7A8-EM12 | A5.17: F6P8-EM12 |
| OK Autrod 13.64 | A5.23:EA2TiB/ 14171-A:S2MoTiB | A5.23: F8TA8-EA2TiB | ||
| OK Autrod 13.62 | A5.23:EG/ 14171-A:SZ3TiB | - |
Approvals
| Combined with Wire | CE | CWB | DB | DNV | GL | VdTÜV |
| OK Autrod 12.20 | * | - | * | - | - | * |
| OK Autrod 12.22 | * | * | * | * | * | * |
| OK Autrod 12.24 | * | - | * | - | - | * |
| OK Autrod 13.27 | * | - | - | - | - | - |
| *Selected production units only. Please contact ESAB for more information. Visit esab.com to download specific flux/wire combination fact sheets for more details. |
Typical Mechanical Properties
| Combined with Wire | Condition | Yield Strength | Tensile Strength | Charpy V-Notch | Elongation |
| OK Autrod 12.20 | As Welded AWS DC+ | 415 MPa (60 ksi) |
500 MPa (73 ksi) |
125 J @ -30°C, (93 ft-lb @ -30 °F) 70 J @ -50°C, (52 ft-lb @ -50 °F) 50 J @ -62°C, (37 ft-lb @ -62 °F) 125 J @ -30°C, (93 ft-lb @ -22 °F) 100 J @ -40°C, (74 ft-lb @ -40 °F) 70 J @ -50°C, (52 ft-lb @ -58 °F) 50 J @ -62°C, (37 ft-lb @ -79.6 °F) |
30 % |
| OK Autrod 12.20 | As Welded EN AC | 420 MPa | 500 MPa (73 ksi) |
140 J @ -30°C, (104 ft-lb @ -22 °F) 130 J @ -40°C, (96 ft-lb @ -40 °F) 80 J @ -50°C, (59 ft-lb @ -58 °F) |
33 % |
| OK Autrod 12.22 | As Welded AWS DC+ | 415 MPa (60 ksi) |
500 MPa (73 ksi) |
120 J @ -30°C, (89 ft-lb @ -30 °F) 100 J @ -40°C, (74 ft-lb @ -40 °F) 70 J @ -50°C, (52 ft-lb @ -50 °F) 50 J @ -62°C, (37 ft-lb @ -62 °F) 120 J @ -30°C, (89 ft-lb @ -22 °F) 70 J @ -50°C, (52 ft-lb @ -58 °F) 50 J @ -62°C, (37 ft-lb @ -79.6 °F) |
30 % |
| OK Autrod 12.22 | As Welded EN AC | 425 MPa | 500 MPa (73 ksi) |
140 J @ -30°C, (104 ft-lb @ -22 °F) 130 J @ -40°C, (96 ft-lb @ -40 °F) 80 J @ -50°C, (59 ft-lb @ -58 °F) |
32 % |
| OK Autrod 12.24 | As Welded AWS DC+ | 500 MPa (73 ksi) |
590 MPa (86 ksi) |
60 J @ -30°C, (44 ft-lb @ -30 °F) 40 J @ -40°C, (30 ft-lb @ -40 °F) 35 J @ -46°C, (26 ft-lb @ -46 °F) 60 J @ -30°C, (44 ft-lb @ -22 °F) 35 J @ -46°C, (26 ft-lb @ -50.8 °F) |
25 % |
| OK Autrod 12.24 | As Welded EN AC | 535 MPa | 600 MPa (87 ksi) |
70 J @ -30°C, (52 ft-lb @ -22 °F) 50 J @ -40°C, (37 ft-lb @ -40 °F) 40 J @ -50°C, (30 ft-lb @ -58 °F) |
24 % |
| OK Autrod 13.27 | As Welded AWS DC+ | 490 MPa (71 ksi) |
610 MPa (88 ksi) |
100 J @ -40°C, (74 ft-lb @ -40 °F) 80 J @ -51°C, (59 ft-lb @ -51 °F) 50 J @ -62°C, (37 ft-lb @ -62 °F) 80 J @ -51°C, (59 ft-lb @ -59.8 °F) 50 J @ -62°C, (37 ft-lb @ -79.6 °F) |
30 % |
| OK Autrod 13.27 | As Welded EN AC | 520 MPa (75 ksi) |
610 MPa (88 ksi) |
120 J @ -30°C, (89 ft-lb @ -22 °F) 100 J @ -40°C, (74 ft-lb @ -40 °F) 80 J @ -50°C, (59 ft-lb @ -58 °F) 60 J @ -60°C, (44 ft-lb @ -76 °F) |
27 % |
| OK Autrod 13.62 | As Welded (acc. AWS) Plate thickness: 12mm; Heat Input: 2.2kJ/mm; Side 1: 600A, 32V, 53cm/min; Side 2: 700A, 60cm/min; DC+ | 500 MPa (73 ksi) |
610 MPa (88 ksi) |
50 J @ -62°C, (37 ft-lb @ -62 °F) 50 J @ -62°C, (37 ft-lb @ -79.6 °F) |
27 % |
| OK Autrod 13.64 | As Welded (acc. to AWS) Plate thickness 12mm Heat input 2.2kJ/mm 700A, 32V, 60cm/min DC+ | 560 MPa (81 ksi) |
660 MPa (96 ksi) |
50 J @ -62°C, (37 ft-lb @ -62 °F) 50 J @ -62°C, (37 ft-lb @ -79.6 °F) |
27 % |
Typical Weld Metal Analysis %
| Typical Weld Metal Analysis % | ||||||||||||||
| C | Mn | Mo | Ni | Si | ||||||||||
| OK Autrod 12.20 AC, 580A, 29V | ||||||||||||||
| 0.06 % | 1.4 % | - | - | 0.2 % | ||||||||||
| OK Autrod 12.20 DC+, 580A, 29V | ||||||||||||||
| 0.05 % | 1.5 % | - | - | 0.2 % | ||||||||||
| OK Autrod 12.22 AC, 580A, 29V | ||||||||||||||
| 0.06 % | 1.4 % | - | - | 0.3 % | ||||||||||
| OK Autrod 12.22 DC+, 580A, 29V | ||||||||||||||
| 0.05 % | 1.5 % | - | - | 0.3 % | ||||||||||
| OK Autrod 12.24 AC, 580A, 29V | ||||||||||||||
| 0.06 % | 1.5 % | 0.5 % | - | 0.2 % | ||||||||||
| OK Autrod 12.24 DC+, 580A, 29V | ||||||||||||||
| 0.05 % | 1.6 % | 0.5 % | - | 0.2 % | ||||||||||
| OK Autrod 13.27 AC, 580A, 29V | ||||||||||||||
| 0.07 % | 1.4 % | - | 2.2 % | 0.30 % | ||||||||||
| OK Autrod 13.27 DC+, 520A, 29V | ||||||||||||||
| 0.05 % | 1.4 % | - | 2.2 % | 0.30 % | ||||||||||