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Precision-Machined Graphite Electrodes
Engineered for laboratory EAF, specialty alloy smelting, and precision metallurgy. Superior machining tolerances ensure zero-gap connections and maximum conductivity.
Engineered for Precision Metallurgy
Specially designed for laboratory-scale EAF, specialty alloy production, and precision smelting applications requiring superior machining quality.
Laboratory EAF
Precision electrodes for research laboratories and university metallurgical facilities requiring consistent, repeatable results.
Specialty Alloys
High-purity electrodes for nickel alloys, titanium alloys, and other specialty metallurgy applications.
Small-Scale Smelting
Optimized for 50-200mm diameter EAF and LF units in precision foundry operations.
Taphole Opening
Specialized electrodes designed for EAF taphole operations, enabling efficient molten metal discharge and furnace maintenance.
Solve Your Precision Smelting Challenges
Engineered specifications for applications where electrode quality directly impacts product quality and operational costs.
Pain Point 01
±0.8mm
Precision Flatness
Ultra-precise end-face machining eliminates micro-gaps at connection points, preventing arc concentration and electrode breakage.
Pain Point 02
±0.01 g/cm³
Density Stability
Exceptional batch-to-batch consistency eliminates hot spots and thermal stress, dramatically extending electrode service life.
Pain Point 03
>12 MPa
Flexural Strength
Superior mechanical strength resists thermal shock and mechanical stress — eliminating costly shutdowns and production losses.
Multi-Grade Specifications
| Parameter | RP Grade Regular Power |
HP Grade High Power |
UHP Grade Ultra High Power |
|---|---|---|---|
| Diameter Range | 50 – 200 mm | 50 – 200 mm | 50 – 200 mm |
| Apparent Density | 1.55 – 1.65 g/cm3 | 1.60 – 1.70 g/cm3 | 1.65 – 1.75 g/cm3 |
| Resistivity | 8 – 10 μΩ·m | 6 – 8 μΩ·m | 5 – 7 μΩ·m |
| Flexural Strength | >8 MPa | >10 MPa | >12 MPa |
| Elastic Modulus | >8 GPa | >10 GPa | >12 GPa |
| CTE (100–400°C) | <2.0 ×10−6 /°C | <1.8 ×10−6 /°C | <1.5 ×10−6 /°C |
Nipple Specifications
| Nipple Size (mm) | Thread | Overtange (mm) | Pitch Diameter (mm) | Taper |
|---|---|---|---|---|
| 76.2 × 101.6 | 6 TPI | 76.2 – 76.6 | 69.4 – 69.8 | 1:12 |
| 88.9 × 101.6 / 127.0 | 6 TPI | 88.9 – 89.4 | 81.7 – 82.3 | 1:12 |
| 98.4 × 101.6 / 127.0 | 5 TPI | 98.4 – 98.9 | 89.7 – 90.3 | 1:12 |
| 124.0 x 152.4 | 4 TPI | 124.0 – 124.7 | 113.0 – 113.8 | 1:12 |
| 152.4 × 177.8 | 4 TPI | 152.4 – 153.2 | 140.5 – 141.5 | 1:12 |
| 177.8 × 215.9 | 4 TPI | 177.8 – 178.8 | 165.0 – 166.0 | 1:12 |
| 196.0 x 215.9 / 254.0 | 4 TPI | 196.0 – 197.0 | 182.5 – 183.5 | 1:12 |
Jiyang vs. Standard Market Quality
Our 50-200mm precision electrodes consistently outperform industry standards in critical machining and performance parameters.
Standard Market
End-face Flatness
±1.5mm
Bulk Density Stability
±0.03 g/cm³
Flexural Strength
>8 MPa
Nipple Tolerance
±0.10mm
Current Load Stability
±5%
Jiyang Guaranteed
End-face Flatness
±0.8mm
Bulk Density Stability
±0.03 g/cm³
Flexural Strength
>12 MPa
Nipple Tolerance
±0.05mm
Current Load Stability
±2%
Result: 40% reduction in electrode consumption, 60% fewer connection-related failures, and significantly improved molten steel quality consistency.
Size Range & Grades
Complete 50-200mm precision electrode range with RP, HP, and UHP grades for every application requirement.
Small Diameter
50-100mm
Precision electrodes for laboratory-scale EAF, research facilities, and specialty alloy production requiring minimal electrode consumption.
Medium Diameter
100-150mm
Versatile range for small-scale commercial EAF operations, specialty foundry, and precious metal recovery applications.
Precision Connections
Custom-machined nipples ensure zero-gap electrode column assembly for maximum conductivity and minimum resistance.
Nipple Specifications
- Material: Same grade as electrode body for thermal expansion matching
- Tolerance: ±0.05mm — vs. standard ±0.10mm
- Thread Quality: Precision-ground threads prevent cross-threading
- Contact Area: 100% face contact at connection
- Anti-oxidation coating: Optional coating for extended outdoor storage
Connection Benefits
- Zero-gap assembly: Eliminates micro-arc at connection points
- Current continuity: Consistent current flow throughout electrode column
- Thermal matching: Prevents separation during thermal cycling
- Easy installation: Hand-tight assembly with standard tooling
- Quality documentation: Each nipple individually tested and certified
Need technical specifications or application consultation? Explore our Technical Hub for detailed installation guides, storage recommendations, and optimization tips for your specific furnace configuration.