DAIKOFCW 107B

FCAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

Basic flux cored wire for flat and horizontal position
Flux cored wire for single or multilayer welding of carbon, carbon-manganese steels and similar steels, including fine grain steels. Main features include excellent weldability in flat and horizontal position, smooth and bright bead, very low spatter losses, easy to remove slag and exceptional mechanical properties even at low temperatures. This wire is especially suitable for welding components of different material or as buffer layer for hardfacing applications.
Specifications
ISO 17632-A
T 46 4 B M 3
AWS A5.36
E70T5
Shielding
M21
Positions
PA, PB, PC
Current
DC+
Packaging Type
BS300, D200 spools
Asme qualifications
F-No (QW432)
6
A-No (QW442)
1
Chem. Comp. %
DEFAULT
C
0.08
Mn
1.3
Ni
0.04
Cr
0.04
P
0.01
S
0.011
Si
0.4
Cu
0.02
Mechanical Properties
min
variant
Tensile strength Rm MPa
530
550
Yield strength Rp0.2 MPa
460
460
Elongation A (L0=5d0) %
20
20
Impact Charpy ISO-V
47J @ -40°C
47J @ -40°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.2 mm
1.6 mm
Ampere
130A - 290A
170A - 400A
Voltage
18V - 30V
28V - 32V
Packaging
Ø 1,0÷1,6mm
Ø 1,0÷1,6mm
Packaging Type
BS300, D200 spools
BS300, D200 spools
Description

Application

Carbon-manganese (C-Mn) steels serve as the predominant structural steels extensively used across various applications in the engineering industry. Successful welding of C-Mn steel fabrications is generally achievable, provided the steel composition is known, necessary precautions are taken, and qualified procedures are adhered to. Weldability varies among C-Mn steels, with potential cracking mechanisms, including hydrogen cracking, solidification cracking, and reheat cracking, depending on specific circumstances. These consumables effectively resist such issues, emphasizing the importance of a meticulous welding procedure. While preheat and post-weld heat treatment (PWHT) may not be universally required, the actual specifications depend on the grade and thickness of the base material being welded. Attaining the required mechanical properties in a welded joint with C-Mn steels is achievable through the use of appropriate welding consumables. However, the intricate structural changes during the weld thermal cycle necessitate careful evaluation of properties such as heat-affected zone (HAZ) toughness and hardness.

Alloy Type

Consumables for welding mild and C-Mn steels of 340-510MPa tensile strength.

Microstructure

Predominantly ferrite.

Materials


EN W.Nr.: EN AW-Al 99,0 (1200), EN AW-Al 99,7 (1070A), EN AW-Al 99,5 (1050A), EN AW-Al 99,5 (1350), EN AW-Al 99,8 (1080A).

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