ESAB

OK Flux 281

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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.

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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 %
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Part Numbers : OK Flux 281
8504F09 Find a distributor

ESAB EQUIPMENT WARRANTIES ARE VALID ONLY WHEN PURCHASED THROUGH AN ESAB AUTHORIZED DEALERSHIP.

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