

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°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+

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°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. 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