G-TECH 109

SMAW
  • HIGH YIELD STRENGTH STEELS
100ksi

Description

Basic coated electrode for high strength low alloy steels
Basic coated electrode highly resistant to cracks and elaborated for welding fine grain steels and steels with high mechanical strength (Rm up to 800 MPa). Welds of high security, buffer layers before hardfacing. It is suitable for high strength low alloy -HSLA- constructions such as cranes and earth moving equipment . Applications include also offshore fabrication, chemical and petrochemical Industry. Regular fusion, stable arc, low spatters, good removal of the slag and nice aspect of the weld seam. Ease of slag removal reduces post-welding cleaning operations to a minimum.
Specifications
ISO 18275-A
E 62 5 1,5NiMo B 42
AWS A5.5
E10018-G
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
DC+, AC
Packaging Type
Carton box
Asme qualifications
F-No (QW432)
4
A-No (QW442)
10
Chem. Comp. %
DEFAULT
C
0.08
Mn
1.3
Ni
1.3
Cr
0.05
P
0.01
S
0.01
Mo
0.4
Si
0.6
Cu
0.25
Mechanical Properties
min
variant
Tensile strength Rm MPa
690
720
Yield strength Rp0.2 MPa
620
620
Elongation A (L0=5d0) %
16
18
Impact Charpy ISO-V
47J @ -50°C
47J @ -50°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.5 mm
3.2 mm
4 mm
5 mm
Ampere
70A - 90A
100A - 140A
140A - 180A
180A - 240A
Voltage
-
-
-
-
Packaging
52 pcs/kg
21 pcs/kg
14 pcs/kg
9 pcs/kg
Packaging Type
Carton box
Carton box
Carton box
Carton box
Description

Application

Exhibiting commendable impact strength at low temperatures, this filler material is well-suited for welding high-strength low-alloy (HSLA) used in cranes and earthmoving equipment. Applications extend to offshore fabrication and the chemical and petrochemical industry, where the precise addition of micro-alloying elements ensures excellent ductility and crack resistance despite the high strength. Preheating requirements depend on the base material and thickness, often mandating a minimum preheat of 100°C. Caution is warranted with certain HSLA steels, as interpass temperatures exceeding 200°C may lead to a reduction in strength and toughness. Post-weld heat treatment (PWHT) requirements are generally dependent on the specific base material and application. This filler material's composite properties offer a blend of durability, weldability, and machinability, making it an ideal choice for manufacturing diverse mechanical components.

Alloy Type

Mn-Ni-Mo low alloy consumables for welding high strength steels with ultimate tensile strength to 690 MPa (100ksi).

Microstructure

Predominantly ferrite; some will contain high proportions of acicular ferrite for optimum as welded toughness.

Materials

For joining of quenched and tempered and thermomechanically rolled fine-grained structural steels. For use in building, crane and vehicle constructions.
EN W.Nr.: S460, S500, S550, S620, S620Q, S620QL, S620QL1, S690Q, S690QL, S690QL1, S600MC, S650MC, S700MC, L690M, L830M.
ASTM: A 514 Gr. F, H, Q, A 709 Gr. 100 Type B, E, F, H, Q, A 709 Gr. HPS 100W.
API: 5L X65, 5L X70, 5L X80+
PROPRIETARY: N-A-XTRA® M 700 (ThyssenKrupp), Strenx® 700 (SSAB).

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