🔬 Today’s Technology Frontier: Breakthrough Application of Aluminum-Clad Invar Core Super Heat-Resistant Aluminum Alloy Strand
The JNRLH3/LBY-160/35 aluminum-clad invar core super heat-resistant aluminum alloy strand, launched by Hubei Changtian Communication Technology Co., Ltd., has become a focal point in power grid upgrades. Its core advantages include:
High-Temperature Resistance: Long-term operating temperature up to 150℃ (short-term up to 180℃), with a current-carrying capacity 1.5-1.6 times that of ordinary conductors.
Mechanical Strength Retention: Maintains over 90% strength under high temperatures, with creep characteristics comparable to ordinary aluminum wires.
Application Scenarios: Particularly suitable for substation high-current busbars, urban grid expansion and renovation (without replacing transmission towers), and emergency load-bearing for double-circuit lines.
📊 Reference Prices of Mainstream Alloys Today
Below are the recent market prices of mainstream alloy products (unit: RMB/kg or RMB/ton; actual prices may vary based on specifications and purchase volume):
| Alloy Type | Grade/Product Name | Price Range | Key Features/Applications | Source |
|---|---|---|---|---|
| Invar | 4J36 | 80,000-100,000 RMB/ton | Low expansion coefficient (1.5×10⁻⁶/℃), precision instrument bases | |
| Hastelloy | Hastelloy G35 | 420-520 RMB/kg | High-temperature and corrosion resistance, phosphoric/sulfuric acid equipment | |
| Hastelloy | C276 | 416 RMB/kg (plate) | Strong corrosion resistance, chemical/marine engineering | |
| Incoloy Alloy | Incoloy 825 | 175.2-179 RMB/kg | Corrosion resistance, flue gas desulfurization, petrochemical equipment | |
| Nickel-Based Superalloy | Incoloy 803 | 279-280 RMB/kg | High-temperature oxidation and sulfidation resistance, ethylene furnace tubes | |
| Nickel-Based Superalloy | Incoloy 706 | 165-175 RMB/kg | High-temperature strength, turbine blades and discs | |
| Aluminum-Clad Invar Core Strand | JNRLH3/LBY-160/35 | 85,500 RMB/ton | Super heat resistance, power grid expansion and renovation |
⚙️ Key Points for Procurement and Processing
Delivery Conditions: For example, Hastelloy C276 can be provided as solution-annealed + pickled seamless tubes, solution-annealed and pickled plates, or annealed and precision-machined forgings.
Selection Misconceptions: Pay attention to the applicable environment of the alloy. For instance, 4J36 Invar has good corrosion resistance in neutral to mildly alkaline environments but requires additional protection in highly corrosive conditions.
Certification Standards: Many alloy materials need to comply with international standards such as ASTM and ASME (e.g., ASTM B622).
🔍 Market Trends and Recommendations
Power Grid Upgrades: The demand for heat-resistant aluminum alloy conductors is rising in urban grid capacity expansion, saving corridor resources and engineering investment.
High-End Manufacturing: The performance requirements for superalloys (e.g., Incoloy 706, 803) in aviation and energy sectors continue to increase.
Procurement Notes: Prices are significantly influenced by specifications, condition (plate/bar/tube), purchase volume, and origin (domestic/imported), with bulk orders often eligible for discounts.
💎 Conclusion
Today’s alloy market highlights focus on power material upgrades (aluminum-clad invar core strands) and the stable demand for high-end corrosion-resistant alloys. During procurement, it is essential to clarify technical parameters, delivery conditions, and verify supplier qualifications and certifications to address complex working conditions and optimize costs.