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Classification:
EN ISO 14343 G 25 9 4 N L
AWS A5.9 ER2594
Description:
Cromamig 2507 deposits a 25%Cr/10%Ni/4%Mo/0.25% N super duplex type weld metal with a ferrite
level of approximately FN 55. It is designed for welding similar composition steels e.g. SAF 2507,
Uranus 52N, Zeron 100, which offer even higher strength and corrosion resistance levels than the
ordinary duplex grades. Cromamig 2507 may also be used for welding standard duplex steels when
higher corrosion resistance in the weld metal is required. A heat input range of 0.4-1.5 KJ/mm is
recommended to maintain a favourable phase balance in the weld metal and avoid deleterious
precipitation effects in the plate. Applications include offshore platform pipework for seawater cooling
systems and firefighting water, as well as pumps, valves and risers. The weld metal has excellent
fracture toughness at temperatures down to –40°C.
Welding current:
DC+
Shielding gas:
M11, Ar + 1-3% O2, 16-21 l/min
Wire composition, wt.%
Mechanical properties
Typical
Yield strength, Rp0.2%: 640 MPa
Tensile Strength, Rm: 850 MPa
Elongation, A5 25%
Impact energy, CV:
20°C
•
135 J
–40°C
•
60 J
Ferrite content:
FN 55
Corrosion resistance
Very good resistance to pitting corrosion and
stress corrosion cracking in chloride and H2S
environments. Good resistance to intergranular
corrosion. Pitting resistance equivalent, PRE = 42.
Critical pitting temperature CPT = 40°C (ASTM
G48).
Scaling temperature:
Approx. 850°C in air.
Product data:
Diam.
mm
Product code Spool weight
0,8 98172008
15 kg S300
60-100
18-21 150-170 24-26
1,0 98172010
15 kg S300
75-140
18-21 170-200 26-28
1,2 98172012
15 kg S300
130-160
18-21 175-250 26-28