The material of a photovoltaic stent significantly impacts its performance in several ways.
Corrosion Resistance
Aluminum Alloys: Offer excellent corrosion resistance, suitable for various environments, especially coastal or humid areas. For example, 6063 aluminum alloy is commonly used in photovoltaic brackets, which can maintain good performance and appearance after long-term exposure to the elements.
Stainless Steel: Renowned for its high corrosion resistance, such as 304 and 316 stainless steel, making it ideal for harsh environments like industrial zones or seaside locations. It ensures the longevity and stability of the stent.
Hot-Dip Galvanized Steel: The zinc coating provides good protection against corrosion, making it a cost-effective choice for many ground-mounted and large-scale photovoltaic projects. It can withstand the rigors of different weather conditions.
Strength and Load-Bearing Capacity
Steel: High-strength steel, like S350GD, is used in large ground-mounted photovoltaic power plants. It can bear heavy loads, including the weight of solar panels and withstand strong winds and snow loads, ensuring the safety and stability of the entire photovoltaic system
Aluminum Alloys: Although not as strong as steel, modern aluminum alloys have sufficient strength for most rooftop and small to medium-sized photovoltaic installations. Their lightweight nature also simplifies installation and reduces the load on the supporting structure.
Thermal Expansion and Contraction
Materials with Low Thermal Expansion Coefficients: Such as certain alloys, are preferred as they can better withstand temperature changes without significant deformation. This helps maintain the alignment and stability of solar panels, ensuring optimal light capture and energy generation efficiency throughout the day and across different seasons.
Aesthetics and Design Flexibility
Aluminum Alloys: Can be easily extruded and shaped into various profiles, offering more design flexibility. They can be made to look sleek and modern, blending well with the architecture of buildings, which is important for some rooftop installations where aesthetics matter.
