BÖHLER CM 2-IG伯乐焊丝

BÖHLER CM 2-IG伯乐焊丝

Description
GTAW rod for 2.25 Cr 1 % Mo alloyed boiler, plate and tube steels as well as in oil refineries.
Preferably used for base metal 10CrMo9-10 (ASTM A335 P22). Approved in long-term
condition up to +600 °C service temperature. Also for similarly alloyed quenched and tempered
steels as well as case hardening steels. The weld metal meets all prerequisites for reliable long
term creep properties without embrittlement due to very low content of trace elements. Brucato
≤ 15 ppm. Very good operating characteristics.
Approvals and Certificates
TÜV-D (1564.), TÜV-A (89), CL (0899), FI (W CrMo2Si), UDT, SEPROZ
Same Alloy Filler metals
SMAW stick electrode: FOX CM 2 Kb GMAW solid wire: CM 2-lG
SAW combination: CM 2-UP/BB 24
base Materials
high temperature steels and similar alloyed cast steels, 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
shielding gas: 100 % Argon ø mm
1.6
rod marking:  2.0
front: W CrMo2 Si 2.4
back: 1.7384 3.0
Preheating and interpass temperature 200-350 °C. Tempering at 700-750 °C at least 1 hr
followed by cooling in furnace down to 300 °C and still air.
Mechanical Properties of All-weld metal
(*) a
yield strength R e N/mm 2 :  470 (≥ 420)
tensile strength R m N/mm 2 :  600 (≥ 520)
elongation A (L 0 = 5d 0 ) %:  23 (≥ 322)
impact work ISO-V KV J + 20 °C: 190 (≥ 347)
(*)  a annealed, 720 °C/2 h/furnace down to 300 °C/air – shielding gas Argon
Typical Composition of Welding Rod
C Si Mn Cr Mo P As Sb Sn
wt-% 0.06  0.7  0.95 2.6 1.0 ≤ 0.010 ≤ 0.010 ≤ 0.005 ≤ 0.006