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 ° 2h
C,
Ferrite content:
FN 9 (WRC-92)
Chemical composition, wt.%
470 MPa
560 MPa
34%
-20 ° • 48 J
C
-60 ° • 45 J
C
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 ° in air.
C
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