DAIKOWS 316LCF

SAW
  • AUSTENITIC STAINLESS STEELS
316LCF

Description

Controlled ferrite solid wire for cryogenic applications
The presence of molybdenum provides creep resistance at elevated temperatures and pitting resistance in a halide atmosphere. This alloy has a low carbon content which makes it particularly recommended where there is a risk of intergranular corrosion. These consumables are used for Mo bearing austenitic stainless steels with 1.5 ÷ 3 Mo. 316 steels are used for their good resistance to pitting, many acids and general corrosion. Controlled weld metal ferrite content (3 ÷8 FN) allow to achieve good cryogenic toughness and lateral expansion down to –196°C.
Specifications
EN ISO 14343-A
S 19 12 3 L
AWS A5.9
ER316L
Shielding
DAIKOFLUX 900-W
Positions
PA, PB, PC
Current
DC/AC
Packaging Type
K415 spool and drums.
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

3-8 FN

Pren

27.08

Hardness

200HV - 220HV
Chem. Comp. %
DEFAULT
C
0.01
Mn
1.4
Ni
13
Cr
18.5
P
0.015
S
0.01
Mo
2.6
Si
0.5
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
510
570
Yield strength Rp0.2 MPa
320
435
Elongation A (L0=5d0) %
25
45
Impact Charpy ISO-V
-
40J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.4 mm
Ampere
300A - 400A
Voltage
27V - 33V
Packaging
Ø 2,0÷4,0mm
Packaging Type
K415 spool and drums.
Description

Application

These consumables are specifically designed for use with austenitic stainless steels containing a molybdenum (Mo) percentage between 1.5% and 3%. Among these, 316/316L steels are widely recognized for their excellent pitting resistance, along with providing significant protection against many acids and general corrosion. Electrodes with controlled ferrite for SMAW welding and cored wires have been specifically designed to operate under cryogenic service conditions. Typical applications include pipelines and vessels intended to operate at cryogenic temperatures (-196 °C), such as in the case of liquefied natural gas (LNG). These materials are not suitable for 316/316H steels intended for high-temperature structural applications. No preheating is necessary, and the maximum interpass temperature can reach 250 °C (up to 300 °C on thicker section materials). No post-weld heat treatment (PWHT) is required. To ensure optimal impact properties, it is recommended to apply heat inputs at the upper limit of the allowed ranges.

Alloy Type

Controlled ferrite 316L austenitic stainless steels for joining 316L base materials used in cryogenic applications.

Microstructure

Austenite with a controlled level of ferrite, 2-5FN (3-8FN for solid wires).

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

Suitable for automated welding processes, ensuring consistent quality in every process.

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