Equivalent to: GB/T 29713 2209 AWS A5.9 ER2209 BS EN ISO 14343-A-G 22 9 3 N L
Characteristics and Applications
The weld metal is of the 22Cr-9Ni-3Mo grade, suitable for welding 22Cr duplex stainless steels such as UNS31803 (namely Alloy 2205). It exhibits high strength, excellent porosity resistance and superior resistance to stress corrosion cracking.
Precautions
1.The shielding gas to be used shall be 98%Ar + 2%CO₂ with a gas flow rate of 15–25 L/min.
2.A well-shielded environment free from drafts shall be provided at the welding site to prevent shielding gas dissipation and subsequent welding defects.
3.Oil stains, moisture and other contaminants on the welding area must be thoroughly removed prior to welding.
4.For non-consumable electrode wire filling welding processes such as TIG, plasma arc and laser welding, the shielding gas shall be 99.99% pure argon.
Typical Chemical Composition of Welding Wire (wt%):
| C | Mn | Si | P | S | Cr | Ni | Mo | N |
Standard Value | ≤0.03 | 0.5-2.0 | ≤0.9 | ≤0.03 | ≤0.03 | 21.5-23.5 | 7.5-9.5 | 2.5-3.5 | ≥0.05 |
Typical Value | 0.024 | 1.63 | 0.56 | 0.018 | 0.005 | 22.23 | 8.82 | 3.12 | 0.13 |
