G-TECH 316LCF

SMAW
  • AUSTENITIC STAINLESS STEELS
316LCF

Description

Controlled ferrite rutile coated electrode for 316L base materials used in cryogenic applications
Its basic-rutile coating ensures an excellent combination of welding performance in all positions, except for vertical down, and a high resistance to cracking providing smooth arc transfer. Excellent weldability with a spatter free arc and self-releasing slag result in a very smooth bead appearance. These electrodes are used for Mo bearing austenitic stainless type 316L used in cryogenic applications (down to -196°C). These electrodes have a controlled ferrite (3÷8). Mainly applications include pipework and vessel for cryogenic service.
Specifications
ISO 3581-A
E 19 12 3 L R 32
AWS A5.4
E316-L16
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
DC+, AC
Packaging Type
Carton box
Asme qualifications
F-No (QW432)
5
A-No (QW442)
8

Ferrite

3-8 FN

Pren

25.26

Hardness

200HV - 220HV
Chem. Comp. %
DEFAULT
C
0.03
Mn
1.1
Ni
12
Cr
18
P
0.02
S
0.01
Mo
2.2
Si
0.5
Mechanical Properties
min
variant
Tensile strength Rm MPa
510
590
Yield strength Rp0.2 MPa
320
440
Elongation A (L0=5d0) %
25
40
Impact Charpy ISO-V
-
50J @ -100°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.5 mm
3.2 mm
4 mm
5 mm
Ampere
50A - 75A
75A - 110A
110A - 150A
160A - 210A
Voltage
-
-
-
-
Packaging
56 pcs/kg
28 pcs/kg
19 pcs/kg
12 pcs/kg
Packaging Type
Carton box
Carton box
Carton box
Carton box
Description

Application

These welding consumables are employed for Mo-bearing austenitic stainless steels containing 1.5-3% Mo, notably used with Type 316/316L steels known for their robust resistance to pitting, various acids, and general corrosion. Specifically designed as controlled ferrite shielded metal arc welding (SMAW) electrodes and flux-cored wires, these consumables are tailored for applications in cryogenic service. Common uses include pipework and vessels subjected to cryogenic conditions, such as LNG facilities. It's important to note their inappropriateness for elevated temperature structural applications involving 316/316H. Operating guidelines dictate no preheating requirement, a recommended maximum interpass temperature of 250°C (with 300°C potentially acceptable for thicker sections), and no post-weld heat treatment (PWHT) necessity. To optimize impact properties, it is advised to apply heat inputs at the higher end of the allowable ranges during the welding process.

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.

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