Color Coated Steel Sheet

Comparison of color coated steel sheet for sandwich panel

The color coated steel sheets for sandwich panel are mainly classified as PE polyester color coated steel sheet, PVDF fluorocarbon color coated steel sheet, HDP high weather resistant polyester color coated steel sheet (also called high performance polyester color coated sheet) and SMP silicon modified color coated steel sheet according to their finish coating. This paper introduces the performance characteristics, service life, application field and comparison of different coated steel sheets.

1. Product name: PE polyester prepainted sheet

• Introduction: Polyester color coated steel sheet is a metal paint color plate coated with PE polyester coating on the metal plate and then baked at high temperature;

• main features: Good adhesion, wide range in formability and outdoor durability, moderate chemical resistance;

• Specifications:

• Thickness 0.17-1.5mm, width below 1250mm;

• Color: White grey, sea blue, crimson and large wall grey are conventional colors,

                   Other colors can be customized according to customers' needs;

• Base plate: Galvanized / aluminized zinc;

• Coating structure: two top coat / one primer coat;

• Coating thickness: 15-25um/5-10um;

• Roll weight: Up to 10 tons;

• Coil inner diameter: Φ510MM/610MM;

• Outer diameter of coil: Φ800-1500MM;

• Service life: 5-10 years;

• Application area: Light steel structure industrial workshop, warehouse, movable house, civil residence, flat to sloping roof, etc.

2. Product name: PVDF fluorocarbon prepainted sheet

• Introduction: Fluorocarbon color plate is a kind of metal paint color plate which is coated on metal plate with PVDF polyvinylidene fluoride coating and baked at high temperature;

• main features: With extraordinary stability, it can maintain the stability of various properties in acid, alkali and polluted environment; with excellent durability, the fluorocarbon color plate can still maintain good color and luster in the outdoor for 20 years; with excellent processing performance, the painted color plate has high flexibility, impact resistance, and post embossing treatment;

• Specifications: 

• Thickness 0.17-1.5mm, width below 1250mm;

• Color: Customized according to customer needs;

• Baseplate: Galvanized / aluminized zinc;

• Coating structure: two top coat / one primer coat;

• Coating thickness: 20-25um/5-10um;

• Roll weight: Up to 10 tons;

• Coil inner diameter: Φ510MM/610MM;

• Outer diameter of coil: Φ800-1500MM;

• service life: More than 20 years;

• application area: It is suitable for chemical plants, power plants, steel plants and high-speed railway stations with high requirements of UV resistance and weather resistance.

3. Product name: HDP high performance prepainted sheet

• Introduction: High performance color board, also known as high weather resistant color board, is a metal baking color board made of HDP high performance polyester coating on the metal board and then baked at high temperature;

• main features: Due to the different molecular structure between high-performance polyester and ordinary polyester, high-performance polyester has better resistance to UV damage and better durability. Its main performance is between polyester and fluorocarbon;

• Specifications: Thickness 0.17-1.5mm, width below 1250mm;

• Color: Customized according to customer needs;

• Baseplate: Galvanized / aluminized zinc;

• Coating structure: two top coat/ one primer coat;

• Coating thickness: 20-25um/5-10um;

• Roll weight: Up to 10 tons;

• Coil inner diameter: Φ510MM/610MM;

• Outer diameter of coil: Φ800-1500MM;

• service life: 10-15 years;

• application area: It is suitable for light steel structure buildings with high UV resistance requirements, flat to sloping roofs, etc.

4. Product name: SMP silicon modified prepainted sheet

• Introduction: Silicon modified color plate is a kind of metal baking paint color plate which is coated on the metal plate with SMP silicon modified resin ester coating and baked at high temperature;

• main features: The hardness, wear resistance and heat resistance of the coating are good, as well as good external durability and non-ulverization, but the gloss retention and flexibility are limited;

• Specifications:  Thickness 0.17-1.5mm, width below 1250mm;

• Color: Customized according to customer needs;

• Baseplate: Galvanized / aluminized zinc;

• Coating structure:  two top coat/ one primer coat;

• Coating thickness: 20-25um/5-10um;

• Roll weight: Up to 10 tons;

• Coil inner diameter: Φ510MM/610MM;

• Coil outer diameter: Φ800-1500MM;

• service life: 10-15 years;

• Application area: Light steel structure industrial workshop, warehouse, civil residence, flat to sloping roof etc.

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Based on the above comparison of different types of coatings, you will clearly know their advantage and disadvantage, then you can make a decision to choose a right color coated steel sheet for your sandwich panels.