Hot Rol Polished Mirror Aluminum Sheet
When it comes to advanced metal solutions for industries demanding the perfect blend of durability and aesthetics, Hot Rolled Polished Mirror Aluminum Sheet stands out prominently. As a specialized product crafted to deliver superior surface finish alongside robust mechanical properties, this aluminum sheet combines the advantages of hot rolling and precision polishing technologies.
What is Hot Rolled Polished Mirror Aluminum Sheet?
Unlike traditional aluminum sheets, Hot Rolled Polished Mirror Aluminum Sheet is manufactured through hot rolling, followed by meticulous polishing to achieve a reflective, mirror-like surface. The hot rolling process involves rolling the aluminum slab above its recrystallization temperature (typically above 400°C) to shape it while eliminating defects like seams or non-homogeneities. Subsequent polishing refines its surface to a nearly flawless brilliance — surpassing conventional cold rolled or brushed finishes.
This product is mainly produced from aluminum alloys such as 1xxx series (pure aluminum) or 3xxx/5xxx series for optimized corrosion resistance and strength.
Functions of Hot Rolled Polished Mirror Aluminum Sheet
- Reflective Surface: The polishing process results in a mirror finish capable of reflecting light efficiently. This is ideal for decorative facades, reflective insulation, and solar applications.
- Enhanced Durability: Hot rolling ensures uniform grain structure, providing improved tensile strength and surface toughness compared to cold rolled sheets.
- Corrosion Resistance: Depending on the alloy selection and tempering, this sheet performs excellently against oxidation and chemical exposure.
- Thermal Conductivity: Retaining aluminum’s remarkable heat dissipation properties, it’s suitable in heat exchangers and lighting fixtures.
- Formability and Weldability: Thanks to controlled HVAC and subsequent surface treatments, these sheets can be easily fabricated without cracking or pitting.
Typical Applications
With its versatile attributes, the hot rolled polished mirror aluminum sheet finds usage across multiple industries:
- Architecture & Interior Design: Decorative cladding, wall panels, elevator interiors, ceilings, and furniture incorporates its mirror finish to amplify aesthetics.
- Transportation: Used in outer body panels of trains, airplanes, and buses requiring lightweight, corrosion-free design alongside premium visuals.
- Food Processing Industry: Because aluminum is sanitary and easy to clean, polished sheets are used for food packaging, storage tanks, and processing equipment.
- Electrical & Solar Equipment: Reflective sheets help optimize light reflection around solar thermal panels and LED fixtures.
- Household Appliances & Signage: Its shiny surface quality meets design needs while retaining resistance to wear and tearing.
Technical Parameters and Manufacturing Standards
To ensure performance consistency, the properties of hot rolled polished mirror aluminum sheets are standardized per widely recognized norms:
| Parameter | Typical Value | Standards |
|---|---|---|
| Alloy Type | 1100, 3003, 5052 | ASTM B209, EN 573 |
| Thickness | 1.0 mm – 6.0 mm | ASTM B جنيهتتالأ |
| Width | 1000 mm – 2000 mm | |
| Surface Finish | Mirror Polish Finish (≤0.2 μm Ra) | ISO 451 (Surface roughness) |
| Tensile Strength (MPa) | 110 – 290 | ASTM E8, EN ISO 6892 |
| Yield Strength (MPa) | 50 – 240 | ASTM E8, EN ISO 6892 |
| Elongation (%) | 10 – 30 | ASTM E8, EN ISO 6892 |
| Thermal Conductivity (W/m·K) | ~235 | ASTM E1952 |
| Surface Reflectivity | >85% (400-700nm Spectrum) | - |
Alloy Composition and Mechanical Properties
| Element (%) | 1100 Alloy | 3003 Alloy | 5052 Alloy |
|---|---|---|---|
| Aluminum (Al) | ≥ 99.0 | ≥ 96.8 | ≥ 97.0 |
| Silicon (Si) | 0.25 max | 0.6 max | 0.4 max |
| Iron (Fe) | 0.4 max | 0.7 max | 0.4 max |
| Copper (Cu) | 0.05 max | 0.05 max | 0.1 max |
| Manganese (Mn) | 0.05 max | 1.0 – 1.5 | 0.1 max |
| Magnesium (Mg) | 0.05 max | 0.1 max | 2.2 – 2.8 |
| Zinc (Zn) | 0.05 max | 0.05 max | 0.1 max |
Alloy Tempering Conditions
Proper heat treatment greatly impacts the mirror aluminum sheet’s mechanical attributes.
| Temper Designation | Description | Characteristics |
|---|---|---|
| O | Annealed (softest condition) | Maximum ductility, minimum strength |
| H | Strain hardened or strain + heat treated | Increases strength, moderately lower ductility |
| H12, H14 | Partial hardening | Good balance of strength & flexibility |
| H34, H38 | Full hardening | Maximum strength, reduced ductility |
| T3 | Solution heat-treated and cold work | Combines strength with moderate formability |
Industry Implementation & Quality Control
Production facilities employ strict QC steps inline with:
- ASTM B209 specifications for aluminum and aluminum alloy sheet thickness, mechanical testing, and surface finish.
- ISO 45001 Safety standards ensure pristine polished surfaces free from contaminants.
- RoHS and REACH Compliance, demonstrating environmentally conscientious production.
Regular stress and corrosion tests certify long-term reliability in environments like marine exposure or chemical processing plants.
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