Reinforcing Steel Aluminum Strand

Technical Advantages

Standardized Manufacturing: Strictly complies with the GB1179-83 national standard, ensuring uniform product specifications and reliable performance.

Rational Structure: Adopts a combined design of aluminum strands and steel core, where aluminum strands handle conductivity, and the steel core provides mechanical support, achieving an optimal balance of electrical performance and mechanical strength.

Complete Specifications: Offers a wide range of cross-sectional options from 10/2 mm² to 240/30 mm², meeting diverse current-carrying requirements.

Explicit Parameters: All technical parameters are standardized and clearly labeled, facilitating engineering selection and calculation.

Controlled Quality: Uniform delivery lengths enhance construction management and quality control.

Features

Materials Science
The steel-cored aluminum strand utilizes electrical-grade aluminum with purity ≥99.7%. Through precisely controlled annealing processes, its conductivity reaches over 61% IACS. The zinc coating weight on the galvanized steel core strictly complies with the standard of ≥300 g/m². The aluminum-steel composite structure achieves an optimal balance between mechanical and electrical performance through layered stranding technology.

Structural Mechanics
The product adopts scientifically designed stranding pitch ratios, ensuring uniform stress distribution across each layer. A strictly controlled pre-twisting process effectively prevents strand loosening. Under long-term operational loads, creep deformation is limited to within 0.05%, and structural reliability is validated through a 2-million-cycle wind-induced vibration fatigue test.

Electrical Performance
In addition to its DC resistance parameters, the product exhibits a measured skineffect coefficient below 1.05 under high-frequency conditions. The increase in AC resistance is controlled within 8%, and its short-circuit thermal capacity reaches 150 kA²·s. After 100 thermal cycles, the degradation in conductivity does not exceed 2%.

Environmental Adaptability
The product has been validated through rigorous environmental testing. Within a temperature range of -40 °C to +80 °C, its coefficient of thermal expansion remains stable. It can withstand an ice coating load of 30 mm, retains over 95% of its tensile strength after 5,000 hours of salt-spray testing, and shows no significant surface degradation after 5,000 hours of UV aging.