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What is the coefficient of thermal expansion of color-coated aluminum coil?
The coefficient of thermal expansion of color-coated aluminum coil is determined by the base aluminum alloy and is largely unrelated to the type of coating (PE or PVDF).
The linear coefficient of thermal expansion of the commonly used base material 3003-H24 in the 20–100°C range is 2.3 × 10⁻⁵ /K (or 23 × 10⁻⁶ /°C).
Conversion units:
-23 μm/(m·°C)
-0.023 mm/(m·°C)
Application Tips
1. When designing expansion joints, estimate the coefficient by multiplying the temperature difference by 0.023 mm/(m·°C).
2. Compared to steel (≈12 × 10⁻⁶ /°C), aluminum expands approximately twice as much, requiring greater allowance for movement in curtain wall and roof systems.
OUR ADVANTAGES
Smoothness
There is no residual stress on the surface and no deformation after shearing
Weather resistance
The paint pattern made by roller coating and high temperature baking has high gloss, good color stability and little color difference change
Decorative
There is a fresh natural beauty, the pattern is casual and do, give customers a wide range of personality choices, can enrich the culture of the product, give people more beautiful enjoyment.
Environmental Protection
Resistant to salt, alkali and acid rain corrosion, will not corrode or produce toxic bacteria, does not release any toxic gases.
Mechanical
ACP after composite with plastic and adhesive. With the flexural and flexural strength required by the decorative plate, in the four seasons climate, the change of wind pressure, temperature, humidity and other factors will not cause bending, deformation,expansion and so on.
