Color steel doors and windows are good or broken bridge aluminum doors and windows good
It depends on what area, if it is in the northeast that the most material is aluminum plus wood. The interior is made of wood trim aluminum. Wood has a warm effect, aluminum alloy has anti-corrosion effect
High-rise building if it is color steel doors and windows and broken bridge aluminum doors and windows choose one, is definitely broken bridge aluminum doors and windows, broken bridge aluminum, whether sealed, heat, environmental protection, energy saving than steel doors and windows strong.
Two kinds of materials used in doors and windows, should be anti-corrosion treatment, Caigang by hot-dip galvanized to solve the problem of corrosion, aluminum must be cured to solve the problem of corrosion, the other should compare the material properties:
A) Tensile strength: The material produces the maximum uniform plastic deformation of the stress. Tensile strength steel 290, aluminum alloy 140;
B) elastic modulus: the material in the elastic deformation stage, the normal stress and the corresponding strain ratio. Steel elastic modulus 206 Gpa, aluminum alloy 70 Gpa;
C) Tensile modulus: Elasticity of the material during stretching. Steel tensile modulus of 20 (MPa × 104), aluminum alloy 6 (MPa × 104);
D) Density: mass per unit volume of material. Steel density 7.8g / cm3, aluminum alloy 2.7 g / cm3;
E) Thermal conductivity: ratio of heat flux to temperature gradient. Steel thermal conductivity of 58, stainless steel 15, and aluminum alloy 220;
The energy efficiency of doors and windows, including other physical and mechanical properties, depends on the material properties of the production of doors and windows frame material, steel and aluminum alloy material performance can be compared, the functional aspects of aluminum are not as good as steel.
