StarBlaze Prime CI 99
AWS A5.15: ENi-CI | EN ISO 1071: EC Ni-CI 1
97.5% Nickel Core | Low Amperage Welding | Grey Cast Iron Specialist
StarBlaze Prime CI 99 is a graphite-coated, pure nickel core wire electrode engineered for high-integrity welding of grey cast iron, malleable iron, and cast iron components under fatigue. Delivering soft machinability and a stable, low-spatter arc even at low current, this electrode ensures minimal dilution and excellent results on aged, cracked, or misaligned castings. Ideal for rectification work and critical repairs across casting industries.
Available Packs
- Dimensions: 2.50 mm x 350 mm, 3.15 mm x 450 mm, 4.00 mm x 450 mm
- Pack Sizes: 2.5 Kg Pouch, 5 Kg Box
- Master Box: 20 Kg, 30 Kg, 40 Kg, Customisable packaging available on request
Key Features
- 97.5% pure nickel deposit for high ductility and low residual stress
- Low heat input and excellent arc control
- Soft, easily machinable weld metal and fusion zone
- Smooth arc with low spatter and easy slag removal
- Best suited for rectification, fatigued cast parts, and aged repairs
Industries
- Casting rectification and quality correction
- Engine block and cylinder head repairs
- Tool machines, housings, and valve bodies
- Foundry maintenance and precision refurbishment
Processes
- Shielded Metal Arc Welding (SMAW / MMA)
- DC+ polarity recommended
- All-position usability
- Ideal for low amperage repairs with tight dimensional control
- Suitable for repairs requiring soft machinability post-welding
Additional Details
- Keep dry; redry at 200–250°C for 1 hour before use
- Clean weld zone thoroughly (remove cast skin and oxide)
- Apply short weld beads; width ≤ 2× diameter, length ≤ 10× diameter
- Hammer welds immediately post-deposition to relieve stress
Product Details
Typical Weld Metal Chemical Composition (%)
| C | Si | Mn | Ni | Fe |
| 1.00 | 0.50 | 0.35 | 97.50 | Rem. |
Typical Mechanical Properties (All Weld Metal)
| Tensile Strength
Rm (N/mm2) |
Hardness HB |
| 450 | 165 approx. |
Recommended Welding Parameters
| Diameter (mm) | Amperage Range (A) |
| 2.50 | 50-70 |
| 3.15 | 70-90 |
| 4.00 | 100-130 |
