BÖHLER DCMS-IG伯乐焊丝

BÖHLER DCMS-IG伯乐焊丝

Description
GTAW rod for 1.25 % Cr 0.5 % Mo alloyed boiler, plate and tube steels as well as for the wel-
ding of quenched and tempered and case hardening steels. Preferably used for the steels
13CrMo4-5 or ASTM A335 P11/P12. Approved in long-term condition up to + 570 °C service tem-
perature. The deposit is noted for its good mechanical properties and good toughness. Further,
good resistance to cracking, when attacked by caustic soda, and the fact that it is suitable for
nitriding, quenching and tempering are additional features. The values of the creep rupture
strength lay within the scatter band of the material 13CrMo4-5. Brucato ≤ 15 ppm.
Very good operating characteristics.
Approvals and Certificates
TÜV-D (0727.), TÜV-A (91), FI (W CrMo1Si), UDT, SEPROZ
Same Alloy Filler metals
SMAW stick electrode:FOX DCMS Kb SAW combination: EMS 2 CrMo/BB 24
FOX DCMS Ti EMS 2 CrMo/BB 25
GMAW solid wire: DCMS-IG Gas welding rod: DCMS
base Materials
similar alloyed high temperature steels and cast steels, case hardening and nitriding steels of
similar chemical composition, steels resistant to caustic cracking
1.7335 13CrMo4-5, 1.7205 15CrMo5, 1.7225 42CrMo4, 1.7728 16CrMoV4, 1.7218 25CrMo4,
1.7258 24CrMo5, 1.7354 G22CrMo5-4, 1.7357 G17CrMo5-5
ASTM A193 Gr. B7; A217 Gr. WC6; A335 Gr. P11 a. P 12
Operating Data
shielding gas: 100 % Argon ø mm
1.6
rod marking:  2.0
front: W CrMo1 Si 2.4
back: 1.7339 3.0
Preheat, interpass temperature and post weld heat treatment as required by the base metal.
Preheating and interpass temperature for 13CrMo4-5 (P11/P12), 200-250 °C. Tempering at
660-700 °C at least 1/2 hr followed by cooling in furnace down to 300 °C and still air.
Mechanical Properties of All-weld metal
(*) a1 a2
yield strength R e N/mm 2 : 490 (≥ 440) 510 (≥ 470)
tensile strength R m N/mm 2 : 590 (≥ 520) 620 (≥ 550)
elongation A (L 0 = 5d 0 ) %: 25 (≥ 322) 22 (≥ 19)
impact work ISO-V KV J + 20 °C: 250 (≥ 347) 200
a1 annealed, 680 °C/2 h/furnace down to 300 °C/air – shielding gas Argon
a2 annealed, 620 °C/1 h/furnace down to 320 °C/air – shielding gas Argon
Typical Composition of Welding Rod
C Si Mn Cr Mo P As Sb Sn
wt-% 0.11  0.6  1.0 1.2 0.5 ≤ 0.012 ≤ 0.010 ≤ 0.005 ≤ 0.006