

Classification:

AWS A5.4

EN ISO 3581-A

E2594-17

E 25 9 4 N L R 12

Description:

Cromarod 2507R is a rutile flux coated electrode which deposits a 25%Cr/

9.0%Ni / 4.0%Mo / 0.25%N super dupex type stainless steel weld metal with a ferrite content of

approximately FN 57. The electrode 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. 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 unfavourable precipitation effects in the plate.

Applications include offshore platform pipework for seawater cooling systems and firefighting water,

as well as pumps, valves and risers. Where good fracture toughness at temperatures down to -40 °C

is required, use Cromarod 2507B.

Coating type:

Rutile

Mechanical properties

Welding positions:

Yield strength, Rp0.2%:

Tensile Strength, Rm:

Elongation, A5

Impact energy, CV:

Typical



Welding current:

DC+, AC OCV > 39V

Redrying temperature:

350 °C, 2h

700 MPa

900 MPa

22%

20 °C • 35 J

Ferrite content:

FN 50-55 (WRC-92)

Chemical composition, wt.%





























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.

Approvals:

CE

DNV

Product data

  





















2,50

300

74532500

60-90

22

0,50

110

1,1

3,25

350

74533200

80-120

23

0,55

53

1,5

4,00

350

74534000

130-170

24

0,55

35

2,3

81