Qingdao Sande Technology Co., LTD
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Alloy Steel Forged Single & Double Lug Plug Fittings for Power Components
Our Alloy Steel Forged Single and Double Lug Plug Fittings are designed to provide robust, reliable connections for power systems. Crafted from high-strength alloy steel, these fittings ensure exceptional durability and performance in demanding electrical applications.
| Parameter | Details |
|---|---|
| Base Material | Alloy Steel (AISI 4140/4340, DIN 41Cr4) |
| Forging Process | Hot forging (1,100°C–1,250°C) for enhanced grain structure |
| Heat Treatment | Quenched & tempered (HRC 28-32) |
| Surface Finish | Zinc-plated, hot-dip galvanized, or bare (customizable) |
| Corrosion Resistance | Salt spray tested (500+ hours for coated variants) |
Product advantage
1. Superior Mechanical Strength & Durability
Military-Grade Alloy Steel (AISI 4140/4340) provides ≥850 MPa tensile strength—30% stronger than stamped or cast alternatives.
Precision Hot Forging ensures optimized grain flow, enhancing impact resistance and fatigue life in high-vibration environments (e.g., wind turbines, railways).
Quenched & Tempered (HRC 28-32) for balanced hardness and toughness, preventing brittle fractures.
2. High Electrical Performance
Low Resistance (≤0.2mΩ): CNC-machined contact surfaces ensure efficient current transfer, rated for up to 300A continuous load.
35kV Insulation Compatibility: Works with heat-shrink tubes or PVC sleeves for high-voltage applications (substations, renewable energy systems).
3. Corrosion & Wear Resistance
Multiple Coating Options:
Hot-Dip Galvanized (1000+ hours salt spray resistance).
Tin-Plated (ideal for copper connections, prevents oxidation).
Passivated (chemical-resistant for industrial zones).
Wide Temperature Range: Performs reliably from -30°C to +200°C.
4. Compliance & Reliability
Certified: IEC 61238, UL 486A-B, and EN 50149 (railway standards).
Rigorous QC: Spectrometer material checks + destructive load testing (each batch).
Primary Applications
These heavy-duty, high-conductivity plug accessories are engineered for secure power transmission in demanding electrical systems:
A. Energy Infrastructure
Substation Connections: Busbar terminations, transformer lugs
Renewable Energy: Solar farm combiner boxes, wind turbine generator terminals
Battery Systems: EV charging stations, grid-scale energy storage
B. Industrial Power Distribution
Motor Control Centers: High-current feeder connections
Switchgear: Circuit breaker terminations
Heavy Machinery: Mining equipment, crane power feeds
C. Transportation Electrification
Railway Systems: Third rail connections, overhead catenary terminations
Marine Applications: Shipboard power distribution
D. Commercial Construction
Data Centers: Busway connections
High-Rise Buildings: Main distribution panel terminations
1. What are the key advantages of alloy steel forged lugs over standard lugs?
30% Higher Strength: Hot-forged alloy steel (AISI 4140/4340) provides ≥850 MPa tensile strength vs. 600 MPa for mild steel
Superior Durability: Optimized grain structure resists vibration fatigue (ideal for wind turbines/railways)
Precision Fit: CNC-machined to ±0.1mm tolerances for perfect cable-to-terminal contact
2. What surface treatments are available for corrosion protection?
Hot-Dip Galvanized (HDG): 80μm coating, 1000+ hr salt spray resistance (coastal areas)
Tin-Plated: Best for copper connections, prevents galvanic corrosion
Bare Steel + Grease: Temporary solution for indoor dry environments
3.How should I store unused lugs?
Short-term: Keep in original anti-tarnish packaging
Long-term: Vacuum-seal with desiccant packs
Never store with dissimilar metals to prevent galvanic corrosion
Thank you for your interest in our high-performance alloy steel forged lugs for power components. Whether you need technical specifications, pricing, or custom solutions, our team is ready to assist you.