DAIKOMCW 107S

FCAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

All position folded metal cored wire
Wire designed for welding C and C-Mn steels, including fine grain steels. Virtually spatter free in the spray-arc range. Particularly suitable for robotic applications. It ensures good edge wetting, finely rippled welds, little oxide formation on the weld surface making multipass welding possible without inter-run cleaning. The weld profile is easily controllable making this wire well suited for gap bridging and positional welding. Suitable for Argon-CO2 (M21) as well as pure CO2 welding
Specifications
ISO 17632-A
T 42 4 M M 3 H5
AWS A5.18
E70C-6M
Shielding
M21
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
BS300, D200 spools
Asme qualifications
F-No (QW432)
6
A-No (QW442)
1
Chem. Comp. %
DEFAULT
C
0.05
Mn
1.6
Ni
0.03
P
0.015
S
0.011
Si
0.6
Cu
0.12
Mechanical Properties
min
variant
Tensile strength Rm MPa
490
550
Yield strength Rp0.2 MPa
420
450
Elongation A (L0=5d0) %
22
20
Impact Charpy ISO-V
27J @ -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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