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Comprehensive Guide to Hairline Finished Prepainted Aluminum Sheet

2025-03-10
Latest company news about Comprehensive Guide to Hairline Finished Prepainted Aluminum Sheet
 

Comprehensive Guide to Hairline Finished Prepainted Aluminum Sheet

 

1. Introduction to Hairline Finished Prepainted Aluminum Sheet

 

 

Hairline finished prepainted aluminum sheet, also known as brushed prepainted aluminum, is a versatile material combining aesthetic appeal, durability, and functional performance. The hairline finish—characterized by fine, parallel microgrooves—imparts a modern, sophisticated look, while the preapplied coating enhances corrosion resistance, color consistency, and weatherability. This article explores its technical details, applications, and market relevance, supported by tabulated data.

2. Technical Specifications and Data

2.1 Physical Properties

 

Property Value Range Test Standard
Thickness 0.3–3.0 mm ASTM B209
Tensile Strength 110–270 MPa ASTM E8
Elongation 2–12% ASTM E8
Density 2.7 g/cm³ ASTM B311
Coefficient of Thermal Expansion 23.6 µm/m·K ASTM E228

2.2 Coating Parameters

 

Coating Type Thickness Adhesion Test Gloss Level (60°)
Polyester (PE) 20–25 µm ASTM D3359 10–30 GU
Polyvinylidene Fluoride (PVDF) 25–35 µm ASTM D3359 5–20 GU
Acrylic 15–20 µm ASTM D3359 20–40 GU

2.3 Surface Finish Characteristics

 

Finish Type Grit Size (Mesh) Line Density (Lines/mm) Ra Value (μm)
Hairline (Fine) 800–1200 15–20 0.8–1.2
Hairline (Medium) 400–600 10–15 1.2–1.8
Hairline (Coarse) 180–240 5–8 1.8–2.5

3. Manufacturing Process