G-TECH 309H
SMAW
- AUSTENITIC STAINLESS STEELS
309H
Description
Rutile-coated electrode with high carbon content
These electrodes are equivalent to the E309 classification, with the difference that the carbon content in the deposited weld metal is maintained above 0.04% by weight. This level improves mechanical properties, particularly tensile strength and creep resistance at elevated temperatures. In combination with a typical ferrite content of approximately 6 FN, they are particularly suitable for welding 24Cr–12Ni wrought and cast steels intended for applications requiring high resistance to corrosion and oxidation. The rutile coating ensures excellent welding performance in all positions, except vertical down, providing a stable arc, smooth metal transfer, and good resistance to cracking. The electrode offers excellent weldability, with a soft, spatter-free arc, self-releasing slag, and weld beads with a smooth, uniform, and clean appearance.
Specifications
EN ISO 3581-A
E 23 12 R 32
AWS A5.4
E309H-16
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
DC+, AC
Asme qualifications
F-No (QW432)
5
A-No (QW442)
8
Ferrite
4-10FN
Pren
23.83
Hardness
85HRB
Chem. Comp. %
0
C
0.10
Mn
0.8
Ni
13
Cr
23.5
P
0.02
S
0.01
Mo
0.1
Si
0.6
Cu
0.1
Mechanical Properties
Min. per standard
Product
Tensile strength Rm MPa
510
700
Yield strength Rp0.2 MPa
320
500
Elongation A (L0=5d0) %
25
20
Impact Charpy ISO-V
-
45J @ 20°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.5
mm
3.2
mm
4.0
mm
5.0
mm
Ampere
50A - 80A
80A - 110A
110A - 150A
160A - 210A
Voltage
-
-
-
-
Packaging
56 pcs/kg
28 pcs/kg
19 pcs/kg
12 pcs/kg
Packaging Type
Carton box
Carton box
Carton box
Carton box
Notes
Pcs/kg is indicative, actual number may vary ± 5%.
