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Classification:
AWS A5.4
E 347-17
EN ISO 3581-A E 19 9 Nb R 12
Description:
Cromarod 347 is a niobium stabilised, rutile flux coated electrode used for welding the Nb or Ti
stabilised 18% Cr/ 10% Ni austenitic stainless steel grades 347 and 321. It is also suitable for the
unstabilised grades 304 and 304L. Cromarod 347 is primarily intended for use where resistance to
intergranular corrosion is required. For welding the controlled carbon material grades 321H and 347H,
used for structural applications at temperatures above 400 °C, Cromarod 308H is recommended
because of its superior creep strength. The electrode has good positional characteristics and
produces low spatter levels and good slag detachability.
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%: 480 MPa
Tensile Strength, Rm: 620 MPa
Elongation, A5 35%
Impact energy, CV:
-60 °C
•
40 J
Ferrite content:
FN 8 (WRC-92)
Corrosion resistance
Good resistance to general and intergranular
corrosion particularly at elevated temperatures.
Scaling temperature:
Approx. 850 °C in air.
Approvals:
CE
Product data
2,5 300 74482500
50-80 21 0,62 90 1,0
3,2 350 74483200
80-110 22 0,64 46 1,3
4,0 350 74484000
130-170 22 0,63 31 1,9
4,0 450 74484045
110-135 22 0,65 23 1,6
5,0 450 74485000
160-220 22 0,65 15 2,8