DAIKOSTRIP 317

ESW, SAW
  • AUSTENITIC STAINLESS STEELS
317L

Description

chromium-nickel-molybdenum strip electrode used to deposit alloy of 19%Cr/13%Ni/4%Mo composition
This strip electrode is used to deposit a second layer corrosion resistant alloy of 19%Cr/13%Ni/4%Mo composition on carbon- and low alloyed steels. The buffer layer is deposited using an over-alloyed consumable, such as 309LMo or 309L. Used in a wide variety of industries such as chemical, petrochemical to obtain 316L and 317L weld overlays. Applications include marine, papermaking, chemical process and food processing applications.
Specifications
EN ISO 14343-A
B 19 13 4 L
AWS A5.9
EQ317L
Shielding
DAIKOFLUX 930, 937AS
Positions
PA
Current
DC+
Packaging Type
Coils Standard 30x05mm 60x05mm 90x05mm Weight 25 300kg width and specific weights available on request
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Pren

30.88

Hardness

80HRB
Chem. Comp. %
0
C
0.02
Mn
1.5
Ni
14
Cr
19
P
0.02
Mo
3.6
Si
0.4
Cu
0.2
Mechanical Properties
min
variant
Tensile strength Rm MPa
480
550
Yield strength Rp0.2 MPa
300
430
Elongation A (L0=5d0) %
25
35
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Description

Application

This consumable is specifically designed for welding 317/317L austenitic stainless steels. It proves ideal for situations of extreme corrosion, typical of the chemical sectors, flue gas desulfurization, seawater desalination, and in particular, the paper, pulp, and textile industries. It is also widely used in marine applications, paper production, chemical processes, and food processing. Additionally, it is suitable for joining 316/316L steels, with a significant advantage: the high molybdenum content in the weld metal enhances resistance to pitting and crevice corrosion in highly corrosive environments. The material offers outstanding resistance to stress corrosion cracking and high tolerance to pitting. The service temperature ranges from -120 °C to 300 °C. Welding these molybdenum-alloyed steels requires attention. Successive passes can cause the formation of secondary phase precipitates in the weld metal. Therefore, it is recommended to limit heat input to a maximum of 1.5 kJ/mm and to keep the interpass temperature below 150 °C. Generally, post-weld heat treatment is not required, but in particular circumstances, a solution anneal between 1080 °C and 1130 °C followed by water quenching may be performed.

Alloy Type

The nominal composition (wt. %) of alloy is 19.5 Cr, 14 Ni, 3.5 Mo, similar but more alloyed than ER316.

Microstructure

The fillers are fully-austenitic and slightly over-alloyed.

Materials

  • EN W.Nr.: 1.4436 (X3CrNiMo17-13-3), 1.4439 (X2CrNiMoN17-13-5), 1.4429 (X2CrNiMoN17-13-3), 1.4438 (X2CrNiMo18-15-4), 1.4583 (X10CrNiMoNb18-12)
  • ASTM: 316Cb, 316LN, 317LN, 317L, A351 CG8M, CG3M
  • UNS: S31726, J92999

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