STARBLAZE PRIME 317L
Rutile Coated | Mo-Rich Austenitic | For Sulphuric Acid and Salt Environments
StarBlaze Prime 317L is a rutile semi-basic stainless steel electrode formulated for welding high Mo austenitic stainless steels such as AISI 317L. With a weld metal composition of approx. 19.5% Cr, 13.2% Ni, and 3.4% Mo, it offers superior resistance to corrosion in sulphuric and sulphurous acid environments. The electrode ensures smooth arc performance, finely rippled bead surface, and easy slag release, making it suitable for pressure vessels, piping, and process plant applications.
Available Packs (Not Verified)
2.50 mm – 5 kg box
3.15 mm – 5 kg box
4.00 mm – 5 kg box
5.00 mm – 5 kg box
Packed in vacuum-sealed packaging for moisture protection
- High Mo content (3.4%) enhances resistance in acidic and chloride-rich conditions
- Typical tensile strength: 590 N/mm²; elongation: 36%; impact: 50 J at +20°C
- Ferrite content (5–8%) provides excellent crack resistance
- Low spatter, stable arc, and self-releasing slag
- Ideal for low carbon, corrosion-prone stainless applications
- Smooth bead finish for minimal post-weld processing
- Chemical and pharmaceutical process equipment
- Sulphuric acid plants and storage tanks
- Pulp and paper bleaching systems
- Food and beverage piping
- Marine and off-shore stainless structures
- Shielded Metal Arc Welding (SMAW / MMA)
- Polarity: AC or DC
- Current range:
- 2.50 mm: 50–80 A
- 3.15 mm: 80–110 A
- 4.00 mm: 110–150 A
- 5.00 mm: 150–180 A
- Welding positions: 1G/PA, 2F/PB, 2G/PC, 3G/PF, 4G/PE
- Interpass temperature: < 200°C
- Re-dry electrodes at 300°C for 1 hour if necessary
- Suitable for welding AISI 317L and equivalent grades (1.4438, 1.4434, 1.4429)
- Recommended for critical corrosion service and highly oxidizing environments
- Provides high integrity welds in thin or thick-walled stainless assemblies
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Mn | Si | S | P | Cr | Ni | Mo | Ferrite |
| 0.03 | 0.90 | 0.85 | 0.012 | 0.018 | 19.50 | 13.20 | 3.40 | 5 – 8 |
Typical Mechanical Properties (All Weld Metal)
| Yield Strength Rp (N/mm2) | Tensile Strength Rm (N/mm2) | Elongation A5 (%) | Charpy Impact Value (ISO-V J +20°C) |
| > 400 | 590 | 36 | 50 |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-80 |
| 3.15 | 80-110 |
| 4.00 | 110-150 |
| 5.00 | 150-180 |
