DAIKOSTRIP 309LMo

ESW, SAW
  • AUSTENITIC STAINLESS STEELS
309LMo

Description

Cladding strip 309LMo alloy
Used for cladding applications to create corrosion resistance layer and buffer layer. It is suitable to produce a 316L composition in single pass. Typical applications include cladding of vessel for chemical and petrochemical industry, refinery, etc.
Specifications
EN ISO 14343-A
B 23 12 2 L / 21 13 3 L
AWS A5.9
(EQ309LMo)
Shielding
DAIKOFLUX 930, 937AS
Positions
PA
Current
DC+
Packaging Type
coils standard 30x0,5mm, 60x0,5mm, 90x0,5mm, weight 25-300kg, width and specific weights available on request
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

10-30 FN

Pren

30.07

Hardness

85HRB
Chem. Comp. %
0
1
C
0.03
0.015
Mn
1.3
1.8
Ni
12.5
13.7
Cr
18.5
20.5
P
-
0.02
S
-
0.01
Mo
2.6
2.9
Si
0.4
0.3
Cu
-
0.1
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
610
Yield strength Rp0.2 MPa
350
400
Elongation A (L0=5d0) %
25
35
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Description

Application


Bearing layers and coated steels: Ideal for overlays on carbon-manganese steel, mild steels, and low-alloy steels. Also used for joining 316L clad plates. Subsequent layers are deposited with selected electrodes to match the cladding material, such as 316L or 318. Perfect also as an intermediate layer before the application of hard facing with chromium carbide.
Dissimilar joints: Dilution tolerance allows the joining of stainless steel 410, 304L, 321, and 316L with mild and low-alloy steels, ideal for reinforcements, brackets, and various accessories. It is advisable to avoid service temperatures above 300 °C. In some applications, a more economical variant such as 309L or 307 may be suitable.
Hardenable steels: The high alloy and ferrite content allows tolerating dilution from various alloyed and hardenable steels, ensuring crack-free welds. Preheat and interpass temperatures vary based on the hardenability of the material. Indicatively, preheating is not required on mild steels, while it can go up to 250 °C on hardenable steels.

Alloy Type

23%Cr-13%Ni-2.5%Mo (309Mo) austenitic stainless steel.

Microstructure

Austenite with ferrite normally in the range 10-30FN.

Materials

Mainly used under high dilution conditions, particularly dissimilar welds between stainless and CMn steels. There are no comparable base materials.

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