Classification:
AWS A5.4
EN ISO 3581-A
E 347-17
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
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
480 MPa
620 MPa
35%
-60 °C • 40 J
Ferrite content:
FN 8 (WRC-92)
Chemical composition, wt.%
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
60