DAIKOWT 316LSi

GTAW
  • AUSTENITIC STAINLESS STEELS
316L

Description

Rod for Austenitic Stainless Steels Containing Mo
The presence of molybdenum ensures creep resistance at high temperatures and resistance to pitting in halide atmospheres. This low-carbon alloy is particularly suitable for minimizing the risks of intergranular corrosion. This consumable is suitable for austenitic stainless steels containing from 1.5% to 3% of Mo. 316 steels are chosen for their resistance to pitting, many acids, and general corrosion. The higher silicon content compared to the standard 316L increases the weld fluidity and enhances the appearance of the weld bead.
Specifications
EN ISO 14343-A
W 19 12 3 L
AWS A5.9
ER316LSi
Certifications
CE
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

2-10 FN

Pren

27.08

Hardness

200HV - 220HV
Chem. Comp. %
DEFAULT
C
0.015
Mn
1.4
Ni
12.8
Cr
18.5
P
0.015
S
0.01
Mo
2.6
Si
0.8
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
510
580
Yield strength Rp0.2 MPa
320
430
Elongation A (L0=5d0) %
25
40
Impact Charpy ISO-V
-
60J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
80A - 100A
110A - 160A
Voltage
-
-
Packaging
Ø 1,0÷4,0 mm
Ø 1,0÷4,0 mm
Packaging Type
5kg carton tube
5kg carton tube
316L
Description

Application

These consumables are specifically designed for austenitic stainless steels containing molybdenum (Mo) at a concentration between 1.5% and 3%. They are also compatible with titanium (Ti) or niobium (Nb) stabilized variants, which include nitrogen within the same alloys. 316/316L type steels are highly valued for their excellent resistance to pitting, many acids, and general corrosion. However, the described 316L consumables are not suitable for use in structural applications at high temperatures with 316/316H steels. For cryogenic applications down to -196 °C, please refer to the specific 316LCF datasheet. No preheating is needed; the maximum interpass temperature is 250 °C, and post-weld heat treatment (PWHT) is not required.

Alloy Type

316L Mo bearing austenitic stainless.

Microstructure

Austenite with a controlled level of ferrite, normally in the range 2-10FN depending on the application.

Materials

  • EN W.Nr.: 1.4404 (X2CrNiMo 17-12-2), 1.4401 (x 5CrNiMo 17 12 2), 1.4436 (X 3 CrNiMo 17 13 3), 1.4406 (X 2 CrNiMoN 17 11 2), 1.4429 (X 2 CrNiMoN 17 13 3), 1.4408 (GX5CrNiMo19-11-2), 1.4437 (GX6CrNiMo18-12)
  • ASTM: 316L, 316, 316LN, CF3M, CF8M
  • UNS: S31603, S31600, S31653

Welding & PWHT

These consumables ensure optimal performance in welding operations by eliminating the need for preheating, while maintaining a strict interpass temperature control at a maximum of 250°C. The absence of a requisite post-weld heat treatment (PWHT) further simplifies the process and enhances efficiency, making them an indispensable choice for welding austenitic stainless steels in challenging environments.

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