

Classification:

AWS A5.4

EN ISO 3581-A

~E309Nb-15

E 23 12 Nb B 42

Description:

Cromarod B309LNb is a basic flux coated electrode primarily intended for depositing the first buffer

layer on mild or low alloyed steels, prior to overlaying with Cromarod 347 or Cromarod B347. The

over-alloyed deposit compensates the effect of dilution with the base material, enabling a full 347 type

overlay to be achieved in the second layer.

Coating type:

Basic

Ferrite content:

FN 13 (WRC 92)

Welding positions:



Welding current:

DC+

Redrying temperature:

350 °C, 2h

Chemical composition, wt.%











 









Product data

  





















3,2

350

74693200

80-120

24

0,67

40

1,1

4,0

350

74694000

100-160

25

0,67

27

1,8

5,0

450

74695000

180-220

26

0,68

19

2,8

70