DAIKOMCW 66

FCAW
  • CARBON STEELS
WEATHERING STEEL-Cor-Ten®

Description

Metal all position flux cored wire
Seamless copper coated metal cored wire with Ni-Cu-Cr additions for gas-shielded metal arc welding of weathering and fine grain structural steels such as Patinax or Cor-ten. 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.
Specifications
EN ISO 17632-A
T 46 6 Z M21 M 1 H5
AWS A5.36
E81T15 M21 H4
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
0.06
Mn
1.2
Cr
0.3
P
0.025
S
0.025
Si
0.45
Cu
0.5
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
550
Yield strength Rp0.2 MPa
460
420
Elongation A (L0=5d0) %
17
22
Impact Charpy ISO-V
47J
47J @ -60°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

Application

This type of steel is primarily used for constructing structures with weather-resistant steels, thanks to precise control of copper addition. This ensures corrosion resistance three times higher and a more stable patina compared to traditional carbon-manganese (C-Mn) steel. Its applications include architectural structures, bridges, drainpipes, and chimneys. It is particularly effective against corrosion in seawater, especially in harsh arctic waters with high oxygenation and salinity. It is often used in the welding of microalloyed and C-Mn steels for icebreaker ships and offshore structures. It is essential to preheat based on the thickness of the joint and its restraint. Typically, the material is left in the 'as-welded' condition, without further treatments.

Alloy Type

Low alloy steel with Ni-Cu-Cr additions for welding weathering steels.

Microstructure

In the as-welded condition the microstructure is ferritic with a high proportion of acicular ferrite for optimum toughness.

Materials

  • EN W.Nr.: S235JRW (1.8960), S235J2W (1.8961), S235J0W (1.8958), S275J0W, S275J2W, S355J0W (1.8959), S355J2W (1.8963), S355J0WP (1.8945)
  • ASTM: A588 gr. A, B, C, K, A242 gr. 1, 2
  • PROPRIETARY: Cor-Ten® A, B (US Steel), Patinax® (Thyssenkrupp)

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