DAIKOWT SG3 HQ

GTAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

Copper coated GTAW rod for welding carbon and C-Mn steels with special surface treatment
Copper coated GTAW rod for welding carbon and carbon-manganese steels with tensile strength up to 530 MPa. The special surface treatment ensures consistent welding performance, low spatters and optimal rod feeding. Used for the fabrication of vessel, pipework and for structural steel applications. Due to the high current load capacity, the stable arc and the nearly residual free weld surface the wire offers the best conditions for productive welding processes. Excellent feeding characteristics provides high wire feed rates especially during robotic welding.
Specifications
ISO 636-A
W 46 5 W 4 S i 1
AWS A5.18
ER70S-6
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
6
A-No (QW442)
1
Chem. Comp. %
DEFAULT
C
0.07
Mn
1.64
Cr
0.03
P
0.01
S
0.015
Si
0.95
Cu
0.05
Mechanical Properties
min
variant
Tensile strength Rm MPa
490
600
Yield strength Rp0.2 MPa
460
500
Elongation A (L0=5d0) %
22
26
Impact Charpy ISO-V
27J @ -50°C
50J @ -50°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
95A - 135A
145A - 205A
Voltage
-
-
Packaging
Ø 1,2÷3,2 mm
Ø 1,2÷3,2 mm
Packaging Type
5kg carton tube
5kg carton tube
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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