DAIKOFCW 107OP

FCAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

All position self-shielded flux cored wire for welding C and CMn steels
Self-shielded flux cored wire for single pass welding of C and C-Mn steels (up to a yield strength of 420 MPa). Self-shielded flux cored wires are often a substitute for stick electrodes for construction and other outdoor applications as they don’t require an external shielding gas and weld faster than stick electrodes since the wires continually feed, allowing for greater productivity. Typical applications include ship building and steel structural work.
Specifications
ISO 17632-A
T 42 Z Z V N 1
AWS A5.20
E71T-GS
Shielding
Self shielded
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
0.26
Mn
0.9
P
0.016
S
0.014
Si
0.5
Mechanical Properties
min
variant
Tensile strength Rm MPa
490
580
Yield strength Rp0.2 MPa
420
450
Elongation A (L0=5d0) %
20
25
Impact Charpy ISO-V
-
-
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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