TOKO ENiFe-CI Welding Electrode
TOKO ENiFe-CI is a nickel-iron electrode specially formulated for welding all types of cast iron where higher strength and better color match are required. It produces a machinable weld deposit with excellent crack resistance and thermal expansion properties similar to cast iron.
Superior Strength & Better Color Match Than Pure Nickel Electrodes
Key Advantages
- AWS A5.15 Compliance: Certified nickel-iron electrode for cast iron applications.
- Higher Strength: Provides greater tensile strength than pure nickel electrodes.
- Better Color Match: Weld metal color closely matches cast iron base metal.
- Excellent Machinability: Weld deposits can be easily machined after welding.
- Thermal Expansion Match: Similar thermal expansion to cast iron minimizes stress.
Classification & Specification
- AWS Classification: Compliant with AWS A5.15 ENiFe-CI standards.
- Material Compatibility: All types of cast iron - gray, malleable, nodular, and alloyed cast iron.
- Specialty: Designed for high-strength cast iron repair and fabrication.
Common Applications
- High-strength cast iron machinery repair
- Automotive engine blocks and cylinder heads
- Heavy equipment components and frames
- Pump housings and compressor parts
- Machine tool bases and structures
- Industrial valve bodies and fittings
Technical Specifications
Chemical Composition (Typical Weld Metal)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 45-55% |
| Iron (Fe) | 40-50% |
| Carbon (C) | ≤1.0% |
| Manganese (Mn) | ≤1.5% |
| Silicon (Si) | ≤0.75% |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ~480-550 MPa (70-80 ksi) |
| Elongation | 10-20% |
| Hardness | 150-220 HB |
| Machinability | Good to Excellent |
Operating Characteristics
- Polarity: DC- (direct current electrode negative) or AC.
- Preheat Temperature: 150-315°C (300-600°F) depending on section thickness.
- Interpass Temperature: Maintain below 315°C (600°F).
- Post-Weld Treatment: Slow cooling in insulating material to prevent cracking.
- Storage: Keep in original packaging in dry conditions.
TOKO-Specific Features
- Arc Stability: TOKO electrodes provide exceptionally smooth, stable arc characteristics.
- Slag Removal: Easy slag detachment improves weld efficiency and appearance.
- Weld Appearance: Produces clean, uniform welds with minimal spatter.
- Certifications: Meets international standards (AWS, ISO, EN) for quality assurance.
- Consistent Performance: Batch-to-batch consistency ensures reliable welding results.
Technical Documentation
✅ For specific guidance and welding parameters, refer to TOKO's technical datasheets and welding procedure specifications.