En
FaF8A2-EB2 F9A8-EF1 F8A8-EH12K F7A5-EM12 F8P2-EB2 F8P8-EF1 F8P8-EH12K F7A5-EM12K F7A5-EM13K F8A8-EA4 F8A8-EH14 F7P5-EM12K F7P5-EM13K F8P8-EA4 F8P8-EH14 F8A4-EA2 F8P5-EA2
op120tt ama op120tt
Flux for Submerged Arc welding of General Struct
AMA OP120TT
| EN 760: | SA FB 1 66 AC H5 |
| DIN 32 522: | B FB 1 66 AC 10MHP5 |
| AWS/ASME: | F8A2-EB2 F9A8-EF1 F8A8-EH12K F7A5-EM12 F8P2-EB2 F8P8-EF1 F8P8-EH12K F7A5-EM12K F7A5-EM13K F8A8-EA4 F8A8-EH14 F7P5-EM12K F7P5-EM13K F8P8-EA4 F8P8-EH14 F8A4-EA2 F8P5-EA2 |
Type/Characteristics:
Agglomerated fluoride-basic type flux for welding general structural steels pressure vessels, pipe steels, as well as fine grain structural steels. Owing to the manganese pick-up caused by AMA-OP120TT, low manganese wire electrodes will find an extended field of application. AMA-OP120TT is outstanding for tandem, multi-wire and twin-wire welding. It delivers a weld metal featuring excellent toughness properties and crack resistance.
AMA-OP120TT can be used on either DC (positive) or AC up to approximately 1000A.
Damp flux shall be redried by baking at 300°C-350°C
Grain size according to DIN 32 522:2-20
Main Constituents:
| SiO2+TiO2 | CaO+MgO | Al2O3+MnO | CaF2 |
|---|---|---|---|
| 15% | 35% | 20% | 30% |
Basicity to boniszewskii: ~3.1
Metallurgical behavior:
Pick-up and burn-off the alloying elements Si and Mn as a function of the alloy content of the wire electrode, DVS Merkblatt 0907, part 1
All -Weld metal analysis (typical values):
| With Wire Electrode | Weight % | |||||||
|---|---|---|---|---|---|---|---|---|
| AMA Trade Name | DIN/EN | C | Si | Mn | Mo | Cr | Cr | |
| 50-11 | S1 | 0.04-0.08 | 0.10-0.25 | 0.7-1.0 | - | - | - | |
| 50-12 | S2 | 0.04-0.08 | 0.20-0.40 | 1.0-1.4 | - | - | - | |
| 50-15 | S3 | 0.04-0.08 | 0.20-0.40 | 1.4-1.7 | - | - | - | |
| 50-14 | S2Mo | 0.04-0.08 | 0.20-0.40 | 1.0-1.4 | 0.5 | - | - | |
| 50-22 | S2crMo1 | 0.04-0.08 | 0.20-0.40 | 1.0-1.4 | 0.5 | 1 | - | |
| 50-24 | S2Ni1 | 0.04-0.08 | 0.25-0.50 | 1.3-1.6 | - | - | 1.0 | |
Mechanical properties of all-weld metal (typical values):
| With Wire Electrode | Heat Treatment | Tensile Strength (N/mm 2 ) | Yield Strength (N/mm 2 ) | Elongation Lo=5d % | Impact energy (Joule) ISO -V 20°C ±0°C -20°C -40°C -60°C |
|---|---|---|---|---|---|
| 50-11 | As Welded | 440-540 | > 360 | > 25 | >150 >120 >90 - - |
| 50-12 | As Welded | 500-600 | > 420 | > 24 | >160 >130 >100 >70 - |
| 50-15 | As Welded | 550-650 | > 450 | > 24 | >160 >130 >100 >70 - |
| 50-14 | As Welded | 600-700 | > 500 | > 22 | >130 >90 70 >40 - |
| 50-22 | Tempered(1) | 570-670 | > 500 | > 22 | >200 >150 - - - |
| 50-22 | norm + Temp (2) | 430-530 | > 310 | > 28 | - >200 - - - |
| 50-24 | As Welded | 540-640 | > 470 | > 25 | - >140 >100 >70 >50 |
1)tempered: 700-720°C
2)norm+temp: 920°C/air + 700-720°C
Application:
| Materials | Multi pass joint welding |
|---|---|
| Pipe Steels | With wire electrode |
| StE 255, WStE 255 | 50-11 |
| StE 285, WStE 285 | 50-11 |
| StE 315, WStE 315 | 50-11 |
| StE 355, WStE 355 | 50-11,50-12 |
| StE 420, WStE 420 | 50-15,50-24 |
| StE 460, WStE 460 | 50-15,50-24 |
| StE 500, WStE 500 | 50-15,50-24 |
| TStE 255, EStE 255 | 50-12 |
| TStE 285, EStE 285 | 50-12 |
| TStE 315, EStE 315 | 50-12 |
| TStE 355, EStE 355 | 50-12 |
| TStE 380, EStE 380 | 50-15,50-24 |
| TStE 420, EStE 420 | 50-15,50-24 |
| St37-2, Ust37-2 | 50-11 |
| RSt 37-2 | 50-11 |
| St44-2, St44-3 | 50-11 |
| St 52.3 | 50-11,50-12 |
| pipe steels | With wire electrode |
| StE 210.7 , StE 240.7 | 50-11 |
| StE 290.7 | 50-11 |
| StE 360.7 | 50-11,50-12 |
| St 37.0,St 37.4, St 35.8 | 50-11 |
| St 44.0,St 44.4, St 45.8 | 50-11 |
| St 52.0, St 52.4 | 50-11,50-12 |
| Boiler plates steels | With wire electrode |
| H I, H II, 17M4 | 50-11 |
| 19MN5 | 50-11,50-12 |
| Creep resistant steels | With wire electrode |
| 15 Mo 3 | 50-14 |
| 13 CrMo 44 | 50-22 |
Adjust for fine plate
Approval: LRS
