ALFA ER308 Stainless Steel TIG Filler Rod
ALFA 308 / ER308 is an extra-low-carbon austenitic stainless steel filler rod designed for welding 19/10 austenitic stainless steel. Its low carbon content provides excellent resistance to intergranular corrosion.
The weld deposit offers corrosion and scale resistance, is specified as free from porosity, and can meet X-ray/radiographic quality requirements. It also provides good resistance to oxidizing and reducing acids.
Key Features
- ALFA 308 / ER308
- Extra-low-carbon austenitic stainless steel filler rod
- 19/10 stainless steel filler rod
- Excellent resistance to intergranular corrosion
- Corrosion and scale-resistant weld deposit
- Good resistance to oxidizing and reducing acids
- Suitable for radiographic-quality welds
- Suitable for plates, sheets, pipes, and tubes
- Argon shielding gas
Product Specifications
| Specification | Details |
|---|---|
| Brand | ALFA |
| Product Name | ALFA 308 |
| Identification | ALFA 308 / ER308 |
| Product Type | Stainless Steel TIG Filler Rod |
| Classification | AWS / SFA 5.9 ER 308 |
| Material Type | Extra-Low-Carbon Austenitic Stainless Steel |
| Shielding Gas | Argon, 99.99% |
| Gas Flow Rate | 6–12 L/min |
| Tensile Strength | 550 MPa Min |
| Elongation | 35% Min |
| Standard Length | 1000 mm |
| Available Sizes | 1.6 mm, 2.0 mm, 2.40 mm, 2.50 mm, 3.15 mm, 3.20 mm |
| Packing per Packet | 5 kg |
| Packing per Box | 20 kg (5 × 4) |
Chemical Composition
| Element | Range |
|---|---|
| Carbon (C) | 0.08% Max |
| Manganese (Mn) | 1.0–2.5% |
| Silicon (Si) | 0.30–0.65% |
| Sulphur (S) | 0.020% Max |
| Phosphorus (P) | 0.030% Max |
| Chromium (Cr) | 19.5–22% |
| Copper (Cu) | 0.50% Max |
| Molybdenum (Mo) | 0.50% Max |
| Nickel (Ni) | 9.0–11.0% |
Typical Applications
ALFA 308 is suitable for welding 19/10 austenitic stainless steel plates, sheets, pipes, and tubes, including:
- AISI 301
- AISI 302
- AISI 304
- AISI 304L
- Chemical plants
- Fertilizer plants
- Oil refineries
- Food industries
- Dairy industries
It can also be used for welding stabilized stainless steel 347 and 321, provided service temperatures for structural applications are below 400°C. The datasheet also lists furniture, hospital, and kitchen equipment applications.
Packing Details
| Size | Length | Packing / Packet | Packing / Box |
|---|---|---|---|
| 1.6 mm | 1000 mm | 5 kg | 20 kg |
| 2.0 mm | 1000 mm | 5 kg | 20 kg |
| 2.40 / 2.50 mm | 1000 mm | 5 kg | 20 kg |
| 3.15 / 3.20 mm | 1000 mm | 5 kg | 20 kg |















