

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