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GEEFLUX 544

IDENTIFICATION
AWS/SFA 5.23: F8A(P)4EA3-A3

CLASSIFICATION
AWS/SFA 5.17 : F7A(P) 5EH10K
AWS/SFA 5.17 : F7A4 EM12K
AWS/SFA 5.17 : F7A(P) 6EH12K
AWS/SFA 5.17 : F7A(P) 4EH14
AWS/SFA 5.23 : F7A(P) 2EA2-A2
AWS/SFA 5.23 : F8A(P) 4EA3-A3
AWS/SFA 5.23 : F9 A(P) 5 EF2-F2 / F10 P0 EF2-F2
AWS/SFA 5.23 : F9 A(P) 4 EF3-F3
AWS/SFA 5.23 : F8PZ-EG-G

DESCRIPTION
Geeflux 544 is a fluoride-basic flux with high basicity and low impurity levels such as P & S. As a result of low oxygen levels in the weld deposits uniform mechanical properties with high toughness values a low temperature are achieved. Because of the almost neutral slag-reactions the chemical analysis of the weld metal can be excellently controlled through the selection of appropriate wire electrodes.

CHEMICAL COMPOSITION OF THE WIRE

Wire C Mn Si S Mo P Cu Cr Ni
EG 0.07 - 0.12 1.25 - 1.80 0.05 0.025 0.45 - 0.65 0.025 0.3 0.15 0.25
max max max Max max max

CHEMICAL COMPOSITION OF THE WIRE (AS PER AWS/SFA 5.17)

Wires C Mn Si S P Cu
EH10K 0.07 - 0.15 1.30 - 1.70 0.05 - 0.25 0.025 max 0.025 max 0.35 max
EM12K 0.05 - 0.15 0.80 -1.25 0.10 - 0.35 0.030 max 0.030 max 0.35 max
EH12K 0.06 - 0.15 1.50 - 2.00 0.20 - 0.65 0.025 max 0.025 max 0.35 max
EH14 0.10 - 0.20 1.70 - 2.20 0.10 max 0.030 max 0.030 max 0.35 max

CHEMICAL COMPOSITION OF THE WELD METAL (AS PER AWS/SFA 5.23)

Wires C Mn Si S P Mo Cu Ni
EA2-A2 0.12 max 1.40 max 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max -
max max
EA3-A3 0.15 max 2.10 max 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max -
max max
EF2-F2 0.17 max 1.25 - 2.25 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max 0.40 - 0.80
max max
EF3-F3 0.17 max 1.25 - 2.25 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max 0.70 - 1.10
max max
EG-G 0.15 Max 1.80 max 0.80 max 0.025 0.025 0.40 - 0.65 0.35 max -
max max

MECHANICAL PROPERTIES OF THE WELD METAL (RANGE) IN AS-WELDED CONDITION

        CVN Impact Value
Wire UTS (MPa) YS (MPa) EL (%)
      (L=4D) Temp Joules
EH10K 520 min 460 min 24 - 32 -46°C 50 - 120
EM12K 480 - 600 400 - 520 22.0 - 30.0 -40°C 50 J
        -51°C 60 J
EH12K - As welded 570 min 490 min 26 min -62°C 50 - 60
        -51°C  
EH12K - After SR 550 min 455 min 28 min -62°C 60 J
EH14 510 - 620 440 min 22 - 28 -46°C 50 - 120
EA2 570 - 680 480 - 560 22 - 28 -40°C 50 - 120
EA3 570 - 690 500 min 22 - 28 -40°C 50 - 120
EF2 620 min 545 min 17 min -51°C 50 min
EF3 630 - 680 560 - 585 20 min -40°C 50 min
EG (PWHT 550 min 470 min 20 min +20°C 30 min
620±15°C/3 hours)

CHARACTERISTIC CHEMICAL CONSTITUENTS

SiO2 + TiO2 Al2O3 + MnO CaO + MgO CaF2
15% 20% 40% 25%
Basicity according to Boniszewski: ~3.0

APPLICATION
Low hydrogen levels after redrying according to the recommendation on the flux labels and optimum
mechanical properties, whilst observing recommended heat control, enable the welding:

•    Tick-walled constructional steels with yield strengths of upto 420 MPa.
•    Off-Shore applications upto 460 MPa yield strengths on steels such as BS 4360-Grade 50 D and S355 2G3 according to DIN EN 10025 (previous designation St 52-3N).
•    Fine grain structural steels for low temperature requirements with impact toughness at -60° C or below.
•    High tensile fine grain steels such as S690QL1 and N-A-XTRA 70.
•    Boiler and vessel steels such as 16Mo3/A204 Grade A, 13CrMo4-5/ A387 Grade 12 or 10CrMo9-10/ A387 Grade 22.

REDRYING TEMPERATURE

Damp flux should be redried at 300 - 350°C for 2 hours

CURRENT CONDITION : AC / DC (+)

FLUX DENSITY : 0.95 Kg/ dm³ (i)

GRAIN SIZE ACCORDING TO ISO 14174 : 2-20 (Tyler 8 x 65)

CURRENT-CARRYING CAPACITY : Upto 800A (DC or AC) using on wire.

* DIFFUSIBLE HYDROGEN CONTENT H5 : Determined in deposited metal according to the method described in ISO3690.

TYPE OF CURRENT DC: Redrying conditions 300-350°C.

 

Wires C Mn Si S P Mo Cu Ni
EA2-A2 max 0.12 max 1.40 max 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max -
EA3-A3 max 0.15 max 2.10 max 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max -
EF2-F2 max 0.17 max 1.25 - 2.25 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max 0.40 - 0.80
EF3-F3 max 0.17 max 1.25 - 2.25 0.80 max 0.03 0.03 0.40 - 0.65 0.35 max 0.70 - 1.10
EG-G max 0.15 Max 1.80 max 0.80 max 0.025 0.025 0.40 - 0.65 0.35 max -