EN ISO 17633-A
Cromacore 2507 is a rutile flux cored wire which deposits a 25%Cr/10%Ni/4%Mo/0.25%N super
duplex type weld metal with a ferrite level of approximately FN 50. 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. Cromacore 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 0.5-2.5 KJ/mm is recommended to maintain a favourable phase balance in the weld
metal and avoid deleterious precipitation effects in the plate. The weld metal has excellent fracture
toughness at temperatures down to –40°C.
Applications include offshore platform pipework for seawater cooling systems and firefighting water,
as well as pumps, valves and risers.
Recommended parameter range:
M21, 80% Ar + 20% CO2, 22-25 l/min.
C1, 100% CO2, 22-25%
Yield strength, Rp0.2%:
Tensile Strength, Rm:
Impact energy, CV:
20°C • 59 J
–40°C • 39 J