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Classification:
AWS A5.4
~E 385-17
EN ISO 3581-A E 20 25 5 Cu N L R 12
Description:
Cromarod 385 is a rutile flux coated electrode designed for welding the fully austenitic stainless steels
of the 20%Cr / 25%Ni / 4.5%Mo / Cu type, used for their very high resistance to corrosion in severe,
non-oxidising environments e.g. sulphuric acid. The low carbon, high alloy content of Cromarod 385
weld metal gives excellent resistance to intergranular corrosion and stress corrosion cracking,
combined with superior resistance to crevice and pitting corrosion. Use no preheat, avoid high
heat-input and maintain an interpass temperature of maximum 150 °C.
For very severe corrosion environments a special variant of this electrode, with a Mo content of 6%, is
available to order.
Coating type:
Rutile
Welding positions:
Welding current:
DC+, AC OCV > 39V
Redrying temperature:
350 °C, 2h
Chemical composition, wt.%
Mechanical properties
Typical
Yield strength, Rp0.2%: 380 MPa
Tensile Strength, Rm: 580 MPa
Elongation, A5 35%
Impact energy, CV:
20 °C
•
55 J
Ferrite content:
FN 0 (WRC-92)
Corrosion resistance
Very good resistance to general and intergranular
corrosion in non-oxidising acid environments e.g.
sulphuric (up to 90%), phosphoric and organic
acids. Good resistance to stress corrosion in
chloride bearing environments.
Scaling temperature:
Approx. 1000 °C in air.
Approvals:
CE
Product data
2,5 300 74502500
40-80 24 0,53 101 1,1
3,2 350 74503200
80-120 25 0,58 50 1,5
4,0 350 74504000
130-170 26 0,58 33 2,3