3003 H16 Mill Finish Aluminium Coil
The 3003 H16 Mill Finish Aluminium Coil is a premium-grade aluminum product widely used in diverse industrial and commercial applications. Known for its excellent combination of strength, corrosion resistance, and formability, it epitomizes versatility and reliability. This product falls under the 3xxx series aluminum alloys, featuring manganese as the primary alloying element, which enhances overall strength without sacrificing workability.
Chemical Composition
The chemical makeup of the 3003 aluminum alloy directly impacts its physical characteristics and performance. Below is the typical composition:
| Element | Content (wt. %) |
|---|---|
| Aluminum (Al) | Balance (≈ 96.8%) |
| Manganese (Mn) | 1.0 – 1.5 |
| Copper (Cu) | 0.05 – 0.20 |
| Iron (Fe) | ≤ 0.7 |
| Zinc (Zn) | ≤ 0.10 |
| Silicon (Si) | ≤ 0.6 |
| Magnesium (Mg) | ≤ 0.10 |
| Others (each) | ≤ 0.05 |
| Others (total) | ≤ 0.15 |
Mechanical Properties
The "H16" temper designation stands for strain-hardened and stabilized state; this means the aluminium coil is moderately hardened by cold working. Below are mechanical specifications:
| Property | Value |
|---|---|
| Tensile Strength | 165 - 215 MPa |
| Yield Strength | Approximately 110 MPa |
| Elongation | ≥ 1% |
| Hardness (Brinell) | 35 - 45 HB |
| Density | 2.73 g/cm³ |
Physical Characteristics
| Characteristic | Details |
|---|---|
| Surface Finish | Mill finish; smooth, natural aluminum surface |
| Coil Thickness | 0.20 mm – 3.0 mm |
| Coil Width | 1000 mm – 1600 mm |
| Coil Weight | Customer specified, typically 3 – 10 metric tons |
| Resistivity | ≈ 4.2 x 10^-8 Ω·m |
| Thermal Conductivity | Approx. 160-170 W/m·K |
Features
Superior Corrosion Resistance:Thanks to the excellent oxidation resistance of aluminum and the addition of manganese, 3003 aluminum coil maintains its integrity and appearance in diverse environments, including those with moderate chemical and atmospheric exposure.
Good Formability and Workability:The H16 temper offers a good balance between strength and forming capabilities. It supports bending, moderate forming, and drawing operations, enabling customization for multiple uses without cracking or sustaining damage.
Moderate Strength:Enhanced by manganese, it exhibits higher strength compared to 1100 aluminum, making it an excellent choice for applications demanding some mechanical resilience.
Lightweight:With a low density of 2.73 g/cm³, this coil provides lightweight strength, which is beneficial for transport efficiency and structures where weight is critical.
Recyclable:The coil is 100% recyclable without damage to virgin properties, supporting sustainability initiatives.
Cost-Effective:The 3003 series offers a cost-friendly alternative to more heavily alloyed aluminum products while maintaining an advantageous property-performing balance.
Mill Finish:The natural, untreated mill finish surface provides flexibility for subsequent coating, painting, laminating, or anodizing.
Applications
Due to its versatile performance characteristics, the 3003 H16 Mill Finish Aluminium Coil finds extensive use in industries such as:
Architecture and Construction:Widely used in roofing sheets, sidings, skylights, gutters, and downspouts owing to its corrosion resistance and ease of fabrication.
HVAC Equipment:Fan blades, heat exchanger fins, and ductwork typically employ 3003 H16 aluminum coils for durability and thermal conductivity.
Cooking and Food Processing:Utilized for utensils, baking trays, and refrigeration units, where corrosion resistance and hygiene are paramount.
Automotive Components:Applied in non-structural body panels for weight reduction contributing to improved fuel economy.
Packaging:Although less common than softer alloys, 3003 is sometimes used for applications such as decorative tins or containers needing moderate strength.
Electrical Components:Examples include busbars and housings, leveraging aluminum’s conductivity and oxidation resistance.
Signage and Decorative Sheets:Its mill finish is preferred when anodizing or coating is intended, adding aesthetics plus longevity in outdoor use.
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