Classification:
EN ISO 14343
AWS A5.9
G 19 9 Nb Si
ER347Si
Description:
Cromamig 347Si is primarily intended 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. For
structural applications at temperatures above 400° Cromamig 308H is recommended because of
C,
its superior strength at elevated temperatures. The higher silicon content gives better arc stability and
weld metal flow which improves bead appearance, particularly when dip transfer welding.
Welding current:
DC+
Mechanical properties
Shielding gas:
M12, Ar + 2% CO2, 16-21 l/min
M13, Ar + 1.3% O2, 16-21 l/min
Yield strength, Rp0.2%:
Tensile Strength, Rm:
Elongation, A5
Impact energy, CV:
Typical
Wire composition, wt.%
400 MPa
620 MPa
30%
20° • 110 J
C
-196° • 30 J
C
Ferrite content:
FN 8
Corrosion resistance
Good resistance to general and intergranular
corrosion particularly at elevated temperatures.
Product data:
Diam. Product code
mm
0,8
1,0
1,2
98222008
98222010
98222012
Spool weight
15 kg S300
15 kg S300
15 kg S300
60-100
75-140
130-160
150
18-21
18-21
18-21
150-170
170-200
175-250
24-26
26-28
26-28