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Classification:
EN ISO 14343 G 19 9 Nb Si
AWS A5.9 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°C, Cromamig 308H is recommended because of
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+
Shielding gas:
M12, Ar + 2% CO2, 16-21 l/min
M13, Ar + 1.3% O2, 16-21 l/min
Wire composition, wt.%
Mechanical properties
Typical
Yield strength, Rp0.2%: 400 MPa
Tensile Strength, Rm: 620 MPa
Elongation, A5 30%
Impact energy, CV:
20°C
•
110 J
-196°C
•
30 J
Ferrite content:
FN 8
Corrosion resistance
Good resistance to general and intergranular
corrosion particularly at elevated temperatures.
Product data:
Diam.
mm
Product code Spool weight
0,8 98222008
15 kg S300
60-100
18-21 150-170 24-26
1,0 98222010
15 kg S300
75-140
18-21 170-200 26-28
1,2 98222012
15 kg S300
130-160
18-21 175-250 26-28