AWS A5.9 ER308
Gas shielded Solid Welding Wire
MIG welding wire AWS A5.9 ER308, H0Cr21Ni10 is 18Cr-8Ni, which is TIG welding wire for stainless steel. No spatter, welding is smooth. The wire also provides excellent weld appeal on back where it is not easily accessible while recoating can achieve beautiful bead on the front.. The crack resistance of the weld metal is good, and the corrosion resistance is good.
AWS A5.9 ER308
Application
AWS A5.9 ER308 is widely used in 12Cr18Ni9 (SUS 302), 06Cr19Ni10 (SUS 304) austenitic kind of stainless steel and welding similar raw materials, used for welding thin plates as well.
Chemical Composition (%)
Reference Current (DC+)
Welding Positions:
Notes:
1. Shield gas: Must ensure not to operate with impurity shield Gas.
Recommendation Rate of mixed gas: Ar+1-3%O2.
2. Operation flow rate of shield gas: 20-25L/min.
3. Electrode extension: 15-25mm
4. The welding should be operated in clean surface without rust, moist, oil contamination and dust.
5. Prevent affected of wind when wind speed reach 1.5m/s to avoid bubbles generated.
The above suggestions are for reference purpose. Evaluate and determine the situation of the scene before starting the wielding process.
Mechanical Properties of Deposited Metal (Ar+20%CO2 Gas shielded)
|
Chemical Composition
|
C
|
Mn
|
Si
|
Cr
|
Ni
|
Mo
|
P
|
S
|
Cu
|
|
Guarantee Value
|
≦0.08
|
1.00~2.50
|
0.30~0.65
|
19.50~22.00
|
9.00~11.00
|
≦0.75
|
≦0.030
|
≦0.030
|
≦0.75
|
|
General Result
|
0.040
|
1.80
|
0.31
|
20.15
|
9.52
|
0.43
|
0.013
|
0.008
|
0.34
|
Test Item |
Rm(N/mm2) |
Rel/Rpo.2(N/mm2) |
A (%) |
KV2(J)-40℃ |
Guarantee Value |
≧790 |
≧690 |
≧17 |
≧27 |
General Result |
840 |
730 |
24.5 |
85、93、75 |
|
Diameter
|
Φ0.8
|
Φ1.0
|
Φ1.2
|
|
Welding Current
|
70~150
|
100~200
|
140~220
|
