Bright & High Gloss

Specular Gloss Aluminum Alloy Sheets

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For products requiring a mirror finish

UACJ provides ultra-high-gloss aluminum alloy sheets that can be used as a mirror finish material. The chemical and electrolytic polishing processes can be omitted, resulting in lower costs and lead times.

Features

  • Mirror finish as is
  • No chemical or electrolytic polishing means lower total cost
  • Comes in thicknesses of 0.3–0.6 mm
  • XL surface finish (XL: eXcellent Luster finish)

Properties

Property Testing method Results
Coating thickness Permascope 3–5μm
Pencil hardness Mitsubishi Uni 2H
Adhesion Cross-cut tape test No release
Bendability 2T, 180° Bending tape No release
Corrosion resistance Salt spray, 1000h No anomalies
Acid resistance 50℃, 95%RH, 1000h No anomalies
Sulfuric acid 10%, Sulfuric acid, 500h No anomalies
Alkali resistance 5%, NaOH, 2h No anomalies
Weather resistance  Sunshine Weatherometer 
1000h
Gr: >85%
No external anomalies

* Representative results

Specifications

0.3–0.6 mm

Regular reflectance (%)

Untreated
Clear coated
Transverse
Longitudinal
Transverse
Longitudinal
84–86
82–84
76–82
75–81
  • Note 1 Measurement method
            Longitudinal: Parallel to rolling direction
            Transverse: Perpendicular to rolling direction
  • Note 2 Reflectance measurement method  
             Regular reflection method: JIS Z8741 method 3 (60° Specular gloss)

Mechanical properties (representative values for 0.5 mm sheet)

Material -Temper
Proof stress
(N/mm2)
Tensile strength
(N/mm2)
Elongation
(%)
FS003-H18
165
185
5

Standard stock measurement

Sheet thickness Width × length Untreated Clear coated
0.3 400×1,200
0.4 ×
0.5
0.6