Classification:
EN ISO 14343
AWS A5.9
W 25 9 4 N L
ER2594
Description:
Cromatig 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. Cromatig 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-
Mechanical properties
Shielding gas:
I1, 99.99% Ar, 6-12 l/min
Yield strength, Rp0.2%:
Tensile Strength, Rm:
Elongation, A5
Impact energy, CV:
Typical
Stamping
Elga, AWS, Wst, EN, Batch
Wire composition, wt.%
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° (ASTM
C
G48).
Scaling temperature:
Approx. 850° in air.
C
Product data:
640 MPa
850 MPa
25%
20° • 135 J
C
–40° • 60 J
C
1,6 x 1000
5 kg
98171016
2,0 x 1000
5 kg
98171020
2,4 x 1000
5 kg
98171024
209