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AWS A5.9: ~ER309LSi
EN ISO 12072-A: G 23 12
Special welding wire for joining dissimilar steels (stainless + structural), overlay welding with machining, buffer layers before hardfacing and repair applications.
Oxidation resistance up to 850°C.
Shielding gas – Ar + 2% CO2.
Application: rail repair, cement industry, excavator buckets, crushers.
Machinable, good wear resistance.
Diameter: 0.8; 1.0; 1.2; 1.6 mm
309, 309L stainless steels
Heat resistant steels
| C | Si | Mn | Cr | Ni | Mo | Cu | P | S | Fe |
| 0.015 | 0.85 | 1.8 | 23.3 | 13.7 | 0.1 | 0.1 | <0.02 | <0.01 | balance |
| Rp 0.2 (MPa) | Rm (MPa) | A5 (%) | KV (J) |
| 420 | 600 | 35 | +20°C / 130 |
| Process | Wire Ø mm | Spool weight kg | Current (A) | Voltage (V) | Gas |
| MIG = + | 0.8 | 100–150 | 22–27 | Ar + 2% CO2 | |
| 1.0 | 120–200 | 24–28 | Ar + 1% O2 | ||
| 1.2 | 140–220 | 24–28 | |||
| 1.6 | 180–260 | 24–30 | 18–20 l/min |
