DAIKOFCW 316LCF

FCAW
  • AUSTENITIC STAINLESS STEELS
316LCF

Description

Rutile all position flux cored wire for cryogenic 316L applications
Austenitic rutile flux cored wire for welding and cladding in all positions thanks to the fast-freezing slag. It offers excellent weldability, easy handling and slag control in all positions resulting in high productivity with outstanding welding performance. These consumables are used for Mo bearing austenitic stainless steels with 1.5 ÷ 3 Mo type 316/316L 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 17633-A
T 19 12 3 L P C1/M21 1
AWS A5.22
E316LT1-1/4
Shielding
M21, C1
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
BS300 spool
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

3-8 FN

Pren

24.86

Hardness

200HV - 220HV
Chem. Comp. %
DEFAULT
C
0.03
Mn
1.2
Ni
12.4
Cr
17.6
P
0.02
S
0.01
Mo
2.2
Si
0.4
Mechanical Properties
min
variant
Tensile strength Rm MPa
510
560
Yield strength Rp0.2 MPa
320
430
Elongation A (L0=5d0) %
25
40
Impact Charpy ISO-V
-
30J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.2 mm
1.6 mm
Ampere
120A - 280A
200A - 350A
Voltage
22V - 30V
26V - 30V
Packaging
Ø 1,2÷1,6mm
Ø 1,2÷1,6mm
Packaging Type
BS300 spool
BS300 spool
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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