OK Flux 231
OK Flux 231 is an active, bonded flux designed for fillet and butt welding of carbon steel plate. It provides excellent tolerance of rust and mill scale so joint preparation can be minimized. This flux will produce horizontal fillets up to 3/8" (9.5 mm) leg size without undercut or rollover. The slag peeling is excellent. OK Flux 231 can be used for multipass welding, but because Mn and Si buildup is possible, welding voltage should be kept to a minimum and plate thickness should be limited to 1" (25 mm). OK Flux 231 is suitable for DC single and parallel wire welding at currents up to 1000 A. It is used for welding rail cars, water heater tanks, ship plates, and structural steel.
Industries
- Railcars
- Ship/Barge Building
- Tank and Vessel Fabrication
- Structural Steel Fabrication
Welding Process
- SAW - Submerged Arc Welding
Classifications
Classifications |
ASME SFA 5.17 : AWS A5.17 : F7A2-EM12K AWS A5.17 : F7A2-EL12 |
Approvals
Grade | CSA W48 E49A3-EM12K-H8 |
Society | CWB |
Approvals are based on factory location. Please contact ESAB for more information. |
Classifications
AWS - As Welded | F7A2-EM12K |
AWS/EN | AWS A5.17: EM12K |
Wire | Spoolarc 81 |
Typical Mechanical Properties
Charpy V-Notch | 28 ft-lb |
Charpy V-Notch | 38 J |
Condition | 1 |
Elongation | 27 % |
Tensile Strength | 81 ksi |
Tensile Strength | 560 MPa |
Combined with Wire | Spoolarc 81 |
Yield Strength | 67 ksi |
Yield Strength | 460 MPa |
Typical Weld Metal Analysis %
Typical Weld Metal Analysis % | ||||||||||||||
C | Mn | P | S | Si | ||||||||||
Spoolarc 81 | ||||||||||||||
0.08 % | 1.40 % | 0.02 % | 0.01 % | 0.30 % |
Part Numbers and Accessories
ESAB EQUIPMENT WARRANTIES ARE VALID ONLY WHEN PURCHASED THROUGH AN ESAB AUTHORIZED DEALERSHIP.