What should you consider when purchasing coated steel sheets? First, understand the intended use and the environmental corrosion potential of the coated steel sheet. Then, choose the appropriate coated steel sheet based on your needs. Just like using ordinary coated steel sheets in ordinary environments, this is all about choosing the right material. Furthermore, the following factors are also important when choosing coated steel sheets.
- Color Film
Different colored films have varying degrees of hardness, flexibility, adhesion, and durability. PVC colored film is currently the most widely used, offering average durability, good hardness and toughness, and a reasonable price. The performance of a colored film is primarily influenced by the application, the corrosive nature of the environment, its service life, durability, processing method, and the degree of deformation.
- Primer
Different primers exhibit varying adhesion, toughness, and corrosion resistance. Epoxy resins offer excellent adhesion to substrates and high corrosion resistance, but they lack the toughness of other primers. Polyester has good adhesion to substrates and excellent toughness, but its corrosion resistance is inferior to epoxy. Polyurethane is a primer with excellent overall performance. The supplier typically selects the primer based on the production process, application, the corrosiveness of the operating environment, and its compatibility with the topcoat.
- Color Film Color Variation
Color film can experience color variation during production and use. This variation is affected by various factors, including production organization, color depth, service life, service environment, and application. Ordering is typically negotiated between the supplier and purchaser.
- Color Film Gloss
The choice is primarily based on usage and user habits. Generally, low gloss is preferred for building panels, while high gloss is preferred for home appliance panels.
- Color Film Toughness/Adhesion
This property is closely related to the workability of the film-laminated metal composite panel. The selection is primarily based on the processing method and degree of deformation. When the deformation rate is fast and the degree of deformation is large, a film-laminated metal composite panel with high impact energy and low T-bend value should be selected. 6. Durability
Durability is a performance characteristic typically measured by service life. It is closely related to factors such as the color film type and thickness, and the corrosive nature of the operating environment.
- Other Performance
Environmental protection requires that laminated metal composite panels possess excellent resistance to solvents, acids and alkalis, pollution, and heat, so these requirements must be taken seriously.
