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
AWS/SFA 5.23 : F11A(P)5 EM4-M4
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 max | 0.025 max | 0.45 - 0.65 | 0.025 max | 0.3 max | 0.15 max | 0.25 max |
| EM4 | 0.10 max | 1.40 - 1.80 | 0.20-0.60 | 0.015 max | 0.010 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 | Cr | Ti+V+Zr |
| 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 | |||||||||
| EM4 | 0.10 max | 1.30 - 2.25 | 0.80 max | 0.020 max | 0.020 max | 0.30 max | 2.0 - 2.80 | 0.30 - 0.80 | 0.80 max | 0.03 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) | |||||
| EM4 | 760 min | 690 min | 15% min | -51°C | 50 - 120 |
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 | - |