AWS A5.9 : ER309L
EN 14343 B : SS309L
JIS Z 3321 : Y309L
▶︎ Characteristics: stainless steel TIG rod
It is modified 316L austenitic stainless steel to higher silicon content to improve welding properties such as higher welding speed. With excellent creep strength and resistance to pitting corrosion.
▶︎ Applications:
Typical applications include welding of 18%Cr-12%Ni-2%Mo stainless steel in chemical, oil and gas refineries.
▶︎ 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 ER312
JIS Z3321 Y312
▶︎ Typical chemical composition of weld metal (wt%)
| C | Cr | Ni | Mn | Si |
| 0.024 | 18.6 | 12.2 | 2.4 | 1.5 |
▶︎ Typical mechanical properties of weld metal
| TS N/mm2 | EL % |
| 580 | 39 |
▶︎ Sizes and Weight per pack.
| Wire size (mm) | 1.6 | 2.0 | 2.4 | 3.2 |
| Weight per box (kg) | 5 | 5 | 5 | 5 |
