ESAB

OK Flux 429

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OK Flux 429 is a neutral, bonded flux intended for butt and fillet welding of carbon and low alloy steel plate. It combines good as welded and stress relieved mechanical properties with excellent performance. Its slag is generally self peeling, even in tight, narrow groove butt welds. It provides moderate tolerance of rust and mill scale. OK Flux 429 is used in offshore oil rig, bridge, ship, pressure vessel, and structural fabrication. It will operate with DC and AC, single and multiwire systems at currents up to 1000 amps.

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Industries

  • Bridge Construction
  • Industrial and General Fabrication
  • Mobile Equipment
  • Pipeline
  • Power Generation
  • Pressure Vessels
  • Process
  • Ship and Offshore Yards
  • Ship/Barge Building
  • Structural Steel Fabrication

Welding Process

  • SAW - Submerged Arc Welding

Classifications

Classifications AWS A5.17 : F7P4-EM14K
AWS A5.17 : F7A2-EM14K
ASME SFA 5.17 :
ASME SFA 5.23 :
AWS A5.17 : F7A2-EM12K
AWS A5.17 : F6P4-EM12K
AWS A5.17 : F7A2-EM13K
AWS A5.17 : F7A4-EH12K
AWS A5.23 : F8A2-EA1-A2
AWS A5.23 : F8P2-EA1-A2
AWS A5.23 : F8A2-EA2-A3
AWS A5.23 : F8P0-EA2-A3
AWS A5.23 : F9A4-ENi1K-Ni1
AWS A5.23 : F9A4-ENi14-Ni4
AWS A5.23 : F8P4-ENi4-Ni4

Approvals

Approvals CWB AWS A5.28 F49A4-ENi1K-Ni1-H8
CWB CSA W48 F49A3-EM12K (H8)
Approvals are based on factory location. Please contact ESAB for more information.

Classifications

Wire AWS/EN AWS - As Welded AWS - PWHT
Spoolarc ENi4 AWS A5.23: ENi4 F9A4-ENi4 Ni4 F8P4-ENi4-ENi4
Spoolarc 81 AWS A5.17: EM12K F7A2-EM12K F6P4-EM12K
Spoolarc 75 AWS A5.23: ENi1K F8A4-ENi1K-Ni1
Spoolarc 53 AWS A5.17: EH12K F7A4-EH12K
Spoolarc 29S AWS A5.17: EM13K F7A2-EM13K
Spoolarc 71 AWS A5.17: EM14K F7A2-EM14K F7P4-EM14K

Typical Mechanical Properties

Combined with Wire Condition Yield Strength Tensile Strength Charpy V-Notch Elongation
Spoolarc 29S As Welded null 460 MPa
(67 ksi)
570 MPa
(83 ksi)
42 J @ -29°C,
(38 ft-lb @ -20 °F)
27 %
Spoolarc 53 As Welded null 490 MPa
(71 ksi)
585 MPa
(85 ksi)
52 J @ -40°C,
(30 ft-lb @ -40 °F)
28 %
Spoolarc 71 As Welded null 475 MPa
(69 ksi)
565 MPa
(82 ksi)
60 J @ -40°C,
(44 ft-lb @ -40 °F)
30 %
Spoolarc 71 Stress Relieved 1 hr @ 621C (1150F) 430 MPa
(63 ksi)
525 MPa
(76 ksi)
60 J @ -29°C,
(44 ft-lb @ -20 °F)
32 %
Spoolarc 75 As Welded null 505 MPa
(73 ksi)
595 MPa
(86 ksi)
54 J @ -40°C,
(40 ft-lb @ -40 °F)
28 %
Spoolarc 81 As Welded null 455 MPa
(66 ksi)
545 MPa
(79 ksi)
65 J @ -29°C,
(48 ft-lb @ -20 °F)
26 %
Spoolarc 81 Stress Relieved 1 hr @ 621C (1150F) 415 MPa
(60 ksi)
515 MPa
(75 ksi)
68 J @ -40°C,
(50 ft-lb @ -40 °F)
30 %
Spoolarc ENi4 As Welded null 565 MPa
(82 ksi)
640 MPa
(93 ksi)
60 J @ -40°C,
(44 ft-lb @ -40 °F)
25 %
Spoolarc ENi4 Stress Relieved 1 hr @ 621C (1150F) 530 MPa
(77 ksi)
615 MPa
(89 ksi)
33 J @ -40°C,
(24 ft-lb @ -40 °F)
26 %

Typical Weld Metal Analysis %

Typical Weld Metal Analysis %
C Mn Mo Ni P S Si
Spoolarc 29S
0.07 % 1.70 % - - 0.020 % 0.012 % 0.70 %
Spoolarc 53
0.06 % 1.80 % - - 0.026 % 0.010 % 0.50 %
Spoolarc 71
0.06 % 1.58 % - - 0.018 % 0.009 % 0.58 %
Spoolarc 75
0.05 % 1.50 % - 0.80 % 0.018 % 0.012 % 0.60 %
Spoolarc 81
0.06 % 1.40 % - - 0.020 % 0.015 % 0.45 %
Spoolarc ENi4
0.06 % 1.30 % 0.15 % 1.79 % 0.021 % 0.009 % 0.40 %
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Part Numbers : OK Flux 429
8424FP9 Find a distributor

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

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