2-114
Description
Basic electrode for 21/4 % Cr 1% Mo alloyed boiler, plate and tube steels. Approved in long-term
condition up to +600 °C service temperature. Core wire alloyed electrode which will provide reliable
creep rupture properties for the whole service life of a boiler plant. Crack resistant and ductile
deposit, high creep rupture strength, low hydrogen content (acc. AWS condition HD < 4 ml/100 g).
Good weldability in all positions except vertical down. Deposit is nitridable and heat treatable.
Metal recovery approx. 115 %. *For step-cooling applications we can offer a special product
program.
Approvals and Certificates
TÜV-D (0722.), DB (10.014.30), ÖBB, TÜV-A (13), ABS (E 9018-B3), DNV (NV 2,25Cr 1Mo),
GL (10 CrMo 9 10), VUZ, SEPROZ, CE
Same Alloy Filler Metals
SMAW electrode: FOX CM 2 Kb SC* GMAW solid wire: CM 2-lG
GTAW rod: CM 2-lG SAW combination: CM 2-UP/BB 24
* For step-cooling applications CM 2 SC-UP/BB 24 SC*
Base Materials
high temperature steels and similar alloyed cast steels, QT-steels similar alloyed up to
980 N/mm2 tensile strength, similar alloyed case hardening steels, nitriding steels
1.7380 10CrMo9-10, 1.8075 10CrSiMoV7, 1.7379 G17CrMo9-10
ASTM A335 Gr. P22; A217 Gr. WC 9
Operating Data
re-drying if necessary: ø mm L mm amps A
300 - 350 °C, min. 2 h 2.5 250 80 - 110
electrode identification: 3.2 350 100 - 140
FOX CM 2 Kb 9018-B3 E CrMo2 B 4.0 350/450 130 - 180
5.0 450 180 - 230
Preheating and interpass temperatures 200-350 °C. Post weld annealing at 700-750 °C at least
1 hour followed by cooling in furnace down to 300 °C and still air.
Mechanical Properties of All-weld Metal
(*) a a1 v
Yield strength Re N/mm2 (MPa): 510 (≥ 440) (≥ 530) 480 (≥ 400)
Tensile strength Rm N/mm2 (MPa): 640 (≥ 570) (≥ 620) 620 (≥ 570)
Elongation A (L0 = 5d0) %: 22 (≥ 320) (≥ 317) 21 (≥ 318)
Impact work ISO-V KV J + 20 °C: 180 (≥ 100) 180 (≥ 100)
(*) a annealed 720 °C/2 h/furnace down to 300 °C/air
a1 annealed, 700 °C/1 h/furnace down to 200 °C/air
v quenched/tempered, 930 °C/0.5 h/oil + 730 °C/0.5 h/furnace down to 300 °C/air
Typical Composition of All-weld Metal
C Si Mn Cr Mo P As Sb Sn
Wt-% 0.08 0.3 0.8 2.3 1.0 ≤ 0.010 < 0.005 ≤ 0.005 ≤ 0.005
EN ISO 3580-A:2008: E CrMo2 B 4 2 H5
EN ISO 3580-B:2008: E6218-2C1M H5
AWS A5.5-06: E9018-B3H4R
AWS A5.5M-06: E6218-B3H4R
BÖHLER FOX CM 2 Kb
SMAW basic electrode, low-alloyed,
high temperature
High Temperature and Creep-resistant Filler Metals – SMAW Covered Electrodes
www.boehler-welding.com