Description
Characteristics:
It is modified 309L austenitic stainless steel to higher silicon content to improve welding properties such as higher welding speed.
Applications:
It is used for oil and gas refineries, include welding of 22%Cr-12%Ni stainless steel, AISI 304L,316L in chemical and welding of dissimilar base metals of stainless and carbon steels.
Notes on Usage:
1. For TIG process, use DC(-) current, Argon Shield and Tungsten Electrode.
2. For MIG process, use Spray Transfer or Short Circuit Transfer mode.
3. 98%Argon – 2%O₂ shielding gas is recommended in MIG process.
Classification:
AWS A5.9 ER309LSi
Typical chemical composition of weld metal (wt%)
| C | Cr | Ni | Mn | Si |
| 0.024 | 23.90 | 13.50 | 2.35 | 0.39 |
Typical mechanical properties of weld metal
| TS N/mm2 | EL % |
| 600 | 39 |
Sizes available
| TIG Rods(mm) | 1.6 | 2.0 | 2.4 | 3.2 |
