Classification:
AWS A5.4
EN ISO 3581-A
E 2209-15
E 22 9 3 NL B 42
Description:
Cromarod Duplex B is a basic flux coated electrode intended for welding similar composition duplex
stainless steels e.g. 1.4462, UNS 31803. The basic coating design produces a very low micro-oxide
level in the deposit, giving excellent fracture toughness at temperatures down to -46 °
C.
Duplex stainless steels 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 ferrite/austenite phase
balance in the weld metal.
Applications:
Offshore, platform, pipework, pipelines transporting chloride bearing products, or sour gas and
process vessels for chloride environments.
'
Coating type:
Basic
Mechanical properties
Metal recovery:
110%
Yield strength, Rp0.2%:
Tensile Strength, Rm:
Elongation, A5
Impact energy, CV:
Typical
Welding positions:
Welding current:
DC+
Ferrite content:
FN 35 (WRC-92)
Redrying temperature:
350 ° 2h
C,
Corrosion resistance
Typical value: PRE 36
CPT 30° (ASTM G48)
C
Approvals:
CE
Chemical composition, wt.%
Product data
630 MPa
790 MPa
27%
-40 ° • 65 J
C
-50 ° • 60 J
C
2,5
300
74622500
50-80
24
0,65
87
0,8
3,2
350
74623200
75-120
25
0,68
43
1,4
4,0
350
74624000
120-175
27
0,68
28
1,9
80