

Classification:

AWS A5.4

EN ISO 3581-A

~E 2209-17

E 22 9 3 N L R 12

Description:

Cromarod Duplex is a rutile flux coated electrode which deposits a 24%Cr / 10%Ni / 3%Mo / 0.15%N

austenitic-ferritic duplex stainless steel weld metal having a ferrite content of about FN 35. The

electrode is easy to use and produces a smooth weld bead finish and good slag detachability.

Cromarod Duplex is designed for welding similar composition duplex stainless steels which offer an

excellent combination of high strength and very good resistance to chloride induced pitting and stress

corrosion cracking. A heat input range of 0.5-2.5 KJ/mm is recommended to maintain a favourable

phase balance. Applications include offshore platform pipework, pipelines transporting chloride

bearing products or sour gas and process vessels for chloride environments. Where higher fracture

toughness at -46 °C is required, use Cromarod Duplex B.

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

670 MPa

840 MPa

25%

-46 °C • 34 J

Ferrite content:

FN 35 (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 = 36

Critical pitting temp. CPT = 30 °C (ASTM G48).

Scaling temperature:

Approx. 850 °C in air.

Approvals:

LR

GL

TÜV

DNV

BV

CE

Product data

  





















2,5

300

74522500

60-90

24

0,62

92

1,1

3,2

350

74523200

80-120

25

0,64

45

1,4

4,0

350

74524000

130-170

26

0,64

30

2,0

5,0

450

74525000

160-220

30

0,64

14

2,7

77