G-TECH 308LB

SMAW
  • AUSTENITIC STAINLESS STEELS
308L

Description

Basic coated low carbon electrode for 304L austenitic stainless steels base materials
Wire with a typical ferrite content of 0.5 FN maximum that provides a fully austenitic and non-magnetic weld deposit. The high level of Mn content ensures freedom from micro cracking and helps to stabilize the austenitic microstructure and aids in hot cracking resistance. Suitable for low temperature applications down to –269°C (e.g. LPG and LNG storage vessels) and where non-magnetic property is required. This filler metal also exhibits good corrosion resistance in acids and seawater, and is particularly suited for corrosion conditions found in urea synthesis plants.
Specifications
ISO 3581-A
E 19 9 L B 42
AWS A5.4
E308L-15
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
DC+;
Packaging Type
Carton box
Asme qualifications
F-No (QW432)
5
A-No (QW442)
8

Ferrite

3-12 FN

Pren

20.33

Hardness

76HRB
Chem. Comp. %
DEFAULT
C
0.035
Mn
1.7
Ni
9.5
Cr
20
P
0.02
S
0.01
Mo
0.1
Si
0.7
Cu
0.1
Mechanical Properties
min
variant
Tensile strength Rm MPa
510
520
Yield strength Rp0.2 MPa
320
320
Elongation A (L0=5d0) %
30
38
Impact Charpy ISO-V
-
80J @ 20°C
Impact Charpy ISO-V
-
40J @ -196°C
Welding Parameters
2.5 mm
3.2 mm
4 mm
5 mm
Ampere
50A - 80A
80A - 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

Engineered for welding 18Cr/8Ni stainless steels, encompassing 301, 302, 303, nitrogen-bearing 304LN, and titanium-stabilized 321, these welding consumables offer versatile performance. They perform well in service temperatures ranging from -100°C to about 400°C, making them suitable for applications in food, brewery, pharmaceutical equipment, architectural and general fabrication, as well as nuclear engineering. It's important to note that these consumables, specifically 308L, are not recommended for elevated temperature structural applications involving 304/304H; refer to 308H for such applications. For cryogenic use at -196°C, consult 308LCF. No preheating is required, and the recommended maximum interpass temperature is 250°C, with no post-weld heat treatment necessary.

Alloy Type

308L austenitic stainless steels for joining 304L base materials.

Microstructure

Austenite with a controlled level of ferrite, normally in the range 3-12FN depending on the application.

Materials


EN W.Nr.: 1.4306 (X2CrNi19-11), 1.4301 (X5CrNi18-10), 1.4311 (X2CrNiN18-10), 1.4308 (X5CrNi19-10), 1.4541 (X6CrNiTi18-10), 1.4543 (X 3 CrNiCuTi 12-9), 1.4561 (X1CrNiMoTi18-13-2), 1.4550 (X6CrNiNb18-10)+
ASTM: 304L, 304, 304LN, CF3, CF8, 321, 347.
UNS: S30403, S30400, S30453, S32100, S34700.

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