

Classification:

AWS A5.4

EN ISO 3581-A

E 309L-17

E 23 12 L R 12

Description:

Cromarod 309L is a rutile flux coated electrode which deposits a 23%Cr / 13%Ni austenitic stainless

steel weld metal. The high alloy content and ferrite level enable the weld metal to tolerate dilution

from mild and low alloy steels without hot cracking or brittle structures.

Applications:

– Dissimilar joints between stainless and mild or low alloy steels.

– Buffer layers on mild and low alloy steels prior to overlaying with Cromarod 308L or Cromarod 347.

– Interface runs in clad steel joints.

– Joining of clad steels and dissimilar joints between stainless and mild or low alloy steels.

– Welding of similar composition 309 type austenitic stainless steels.

– Joining ferritic-martensitic 410 and 430 type stainless steels.

'

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

Ferrite content:

FN 9 (WRC-92)

Chemical composition, wt.%





















470 MPa

560 MPa

34%

-20 °C • 48 J

-60 °C • 45 J

Corrosion resistance

As Cromarod 309L is usually used for buffer layers

and dissimilar joints, corrosion resistance is of

less importance. Two layers on mild steel is about

equivalent to 304L type material.

Scaling temperature:

Approx. 1000 °C in air.

Approvals:

LR

DNV

CE

BV

ABS

GL

Product data

  





















2,5

300

74392500

40-80

27

0,67

83

0,9

3,2

350

74393200

80-120

28

0,67

42

1,4

4,0

350

74394000

100-160

29

0,67

28

1,9

4,0

450

74394045

100-160

29

0,67

21

1,9

5,0

450

74395000

170-230

30

0,65

14

2,8

68