2-109
Description
Basic low-hydrogen electrode for 0.5 % Mo-alloyed boiler, plates, and tube steels. Approved in longterm
condition up to +550 °C service temperature.
For high quality welds of long term stressed components with reliable mechanical properties under
high and low temperature conditions. Crack resistant, tough and ageing resistant. Very low hydrogen
content (acc. AWS condition HD < 4 ml/100 g). Metal recovery approx. 115 %.
Approvals and Certificates
TÜV-D (0019.), KTA 1408.1 (8053.00), DB (10.014.14), ÖBB, TÜV-A (71), ABS (E 7018-A1),
DNV (NV 0,3Mo), GL (15 Mo 3), RMR (-), Statoil, LTSS, VUZ, SEPROZ, CRS (3YH10),
NAKS, CE
Same Alloy Filler Metals
SMAW electrode: FOX DMO Kb SAW combination: EMS 2 Mo/BB 24
GTAW rod: DMO-IG EMS 2 Mo/BB 25
GMAW solid wire: DMO-lG Gas welding rod: DMO
Flux cored wire: DMO Ti-FD
Base Materials
high temperature steels and similar alloyed cast steels, steels resistant to caustic cracking
and ageing resistant steels
16Mo3,S355J2G3, E295, E335, P255G1TH, L320 - L415NB, L320MB - L415MB, S255N,
P295GH, P310GH, 15NiCuMoNb5, 20MnMoNi4-5, 17MnMoV6-4, S255N - S500N,
S255NH - S500NH, S255NL - S500NL, GE240 - GE300, 22Mo4, GP240GH
ASTM A335 Gr. P1; A161-94 Gr. T1; A217 Gr. WC1; A182M Gr. F1; A204M Gr. A, B, C;
A250M Gr. T1
Operating Data
re-drying if necessary: ø mm L mm amps A
300 - 350 °C, min. 2 h 2.5 250/350 80 - 110
electrode identification: 3.2 350 100 - 140
FOX DMO Kb 7018-A1 E Mo B 4.0 350/450 130 - 180
5.0 450 190 - 230
Preheat, interpass temperature, and post weld heat treatment as required by the base metal.
Mechanical Properties of All-weld Metal
(*) u a
Yield strength Re N/mm2 (MPa): 510 (≥ 480) 520 (≥ 470)
Tensile strength Rm N/mm2 (MPa): 590 (≥ 560) 600 (≥ 560)
Elongation A (L0 = 5d0) %: 26 (≥ 322) 25 (≥ 322)
Impact work ISO-V KV J + 20 °C: 170 (≥ 120) 170 (≥ 120)
- 50 °C: 62 (≥ 332)
(*) u untreated, as-welded
a annealed, 620 °C/2 h/furnace down to 300 °C/air
Typical Composition of All-weld Metal
C Si Mn Mo
Wt-% 0.08 0.35 0.8 0.45
EN ISO 3580-A:2008: E Mo B 4 2 H5
EN ISO 3580-B:2008: E4918-1M3 H5
EN ISO 2560-A:2005: E 38 5 Mo B 4 2 H5
EN ISO 2560-B:2005: E55 18-1M3 A U H5
AWS A5.5-06: E7018-A1H4R
AWS A5.5M-06: E4918-A1H4R
BÖHLER FOX DMO Kb
SMAW basic electrode, low-alloyed,
high temperature
High Temperature and Creep-resistant Filler Metals – SMAW Covered Electrodes
www.boehler-welding.com
Description
Basic low-hydrogen electrode for 0.5 % Mo-alloyed boiler, plates, and tube steels. Approved in longterm
condition up to +550 °C service temperature.
For high quality welds of long term stressed components with reliable mechanical properties under
high and low temperature conditions. Crack resistant, tough and ageing resistant. Very low hydrogen
content (acc. AWS condition HD < 4 ml/100 g). Metal recovery approx. 115 %.
Approvals and Certificates
TÜV-D (0019.), KTA 1408.1 (8053.00), DB (10.014.14), ÖBB, TÜV-A (71), ABS (E 7018-A1),
DNV (NV 0,3Mo), GL (15 Mo 3), RMR (-), Statoil, LTSS, VUZ, SEPROZ, CRS (3YH10),
NAKS, CE
Same Alloy Filler Metals
SMAW electrode: FOX DMO Kb SAW combination: EMS 2 Mo/BB 24
GTAW rod: DMO-IG EMS 2 Mo/BB 25
GMAW solid wire: DMO-lG Gas welding rod: DMO
Flux cored wire: DMO Ti-FD
Base Materials
high temperature steels and similar alloyed cast steels, steels resistant to caustic cracking
and ageing resistant steels
16Mo3,S355J2G3, E295, E335, P255G1TH, L320 - L415NB, L320MB - L415MB, S255N,
P295GH, P310GH, 15NiCuMoNb5, 20MnMoNi4-5, 17MnMoV6-4, S255N - S500N,
S255NH - S500NH, S255NL - S500NL, GE240 - GE300, 22Mo4, GP240GH
ASTM A335 Gr. P1; A161-94 Gr. T1; A217 Gr. WC1; A182M Gr. F1; A204M Gr. A, B, C;
A250M Gr. T1
Operating Data
re-drying if necessary: ø mm L mm amps A
300 - 350 °C, min. 2 h 2.5 250/350 80 - 110
electrode identification: 3.2 350 100 - 140
FOX DMO Kb 7018-A1 E Mo B 4.0 350/450 130 - 180
5.0 450 190 - 230
Preheat, interpass temperature, and post weld heat treatment as required by the base metal.
Mechanical Properties of All-weld Metal
(*) u a
Yield strength Re N/mm2 (MPa): 510 (≥ 480) 520 (≥ 470)
Tensile strength Rm N/mm2 (MPa): 590 (≥ 560) 600 (≥ 560)
Elongation A (L0 = 5d0) %: 26 (≥ 322) 25 (≥ 322)
Impact work ISO-V KV J + 20 °C: 170 (≥ 120) 170 (≥ 120)
- 50 °C: 62 (≥ 332)
(*) u untreated, as-welded
a annealed, 620 °C/2 h/furnace down to 300 °C/air
Typical Composition of All-weld Metal
C Si Mn Mo
Wt-% 0.08 0.35 0.8 0.45
EN ISO 3580-A:2008: E Mo B 4 2 H5
EN ISO 3580-B:2008: E4918-1M3 H5
EN ISO 2560-A:2005: E 38 5 Mo B 4 2 H5
EN ISO 2560-B:2005: E55 18-1M3 A U H5
AWS A5.5-06: E7018-A1H4R
AWS A5.5M-06: E4918-A1H4R
BÖHLER FOX DMO Kb
SMAW basic electrode, low-alloyed,
high temperature
High Temperature and Creep-resistant Filler Metals – SMAW Covered Electrodes
www.boehler-welding.com