G-TECH 107

SMAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

Double coated rutile-basic coated electrode
Basic double coated electrode with special covering. Suitable for positional welds, except vertical down. Excellent weldability with easily detachable glassy slag and good bead appearance. The deposit is crack free even when impurities are present. Suitable for general assemblages in high requirements constructions, as well as for the welding of medium carbon steels (C = 0,25%). Used in the medium section steel fabrication, boilers construction, earth moving machines, high pressure tubes and for any repair in general.
Specifications
ISO 2560-A
E 42 3 B 12
AWS A5.1
E7016
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
AC, DC+
Packaging Type
Carton box and dry pack
Asme qualifications
F-No (QW432)
4
A-No (QW442)
1
Chem. Comp. %
DEFAULT
C
0.08
Mn
1.1
Ni
0.02
Cr
0.03
P
0.01
S
0.008
Mo
0.02
Si
0.45
Mechanical Properties
min
variant
Tensile strength Rm MPa
490
550
Yield strength Rp0.2 MPa
420
450
Elongation A (L0=5d0) %
22
25
Impact Charpy ISO-V
27J @ -30°C
40J @ -30°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.5 mm
3.2 mm
4 mm
5 mm
Ampere
50A - 80A
80A - 120A
110A - 160A
160A - 200A
Voltage
-
-
-
-
Packaging
50 pcs/kg
31 pcs/kg
20 pcs/kg
10 pcs/kg
Packaging Type
Carton box and dry pack
Carton box and dry pack
Carton box and dry pack
Carton box and dry pack
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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