Learn more about 8021 aluminum foil
“8021 aluminum foil” refers to 8021 alloy aluminum foil, which is a more common alloy type in the 8000 series. 8021 alloy is a common type of aluminum alloy with high strength and plasticity. Aluminum foil 8021 is a thin sheet made of pure aluminum, which has good flexibility, thermal conductivity and electrical conductivity. It is widely used in food packaging, pharmaceutical packaging, battery casing, thermal insulation materials and other fields.
What is the composition of 8021 alloy aluminum foil?
The main components of 8021 aluminum alloy include alloy additions of aluminum (Al), copper (Cu) and a small amount of other elements.
| 8021 aluminum foil chemical element content table (%) | |||||||||
| Alloy | Al | Fe | Si | Cu | Mn | Mg | Sn | B | Others |
| 8021 | 96.8-98.2 | 0.7 | 0.65 | 1.2-1.8 | 0.15 | 0.01 | 0.05 | 0.05 | 0.15 |
Mechanical properties of 8021 aluminum foil products
| Alloy Temper | Tensile strength | Yield strength | Elongation | Melting point | Thermal conductivity | Density |
| 8021 O aluminum foil | ≥80MPa | ≥40MPa | ≥25% | 660°C | 237 W/(m·K) | 2.70 g/cm³ |
| 8021 H12 aluminum foil | 110-145 MPa | ≥75 MPa | ≥3% | |||
| 8021 H14 aluminum foil | 130-175 MPa | ≥115 MPa | ≥2% | |||
| 8021 H16 aluminum foil | 150-185 MPa | ≥135 MPa | ≥2% | |||
| 8021 H18 aluminum foil | ≥185 MPa | ≥170 MPa | ≥2% | |||
| 8021 H22 aluminum foil | 130-165 MPa | ≥115 MPa | ≥3% | |||
| 8021 H24 aluminum foil | 150-180 MPa | ≥135 MPa | ≥2% |
8021 aluminum foil as pharmaceutical packaging
8021 aluminum foil has good mechanical properties and can be used as a pharmaceutical packaging material.
| Specification | Range |
|---|---|
| Thickness | 0.02mm – 0.2mm |
| Width | 200mm – 1600mm |
| Hardness | O, H14, H18 |
| Roll Diameter | 200mm – 600mm |
| Surface Treatment | One side bright, possibly with coatings, lubricants, or printing |
8021 aluminum foil as food packaging
| Specification | parameters |
|---|---|
| Thickness | 0.02mm – 0.2mm |
| Width | 200mm – 1600mm |
| Hardness | O, H12, H14, H16, H18 |
| Roll Diameter | 200mm – 600mm |
| Surface Treatment | One side bright, possibly with coatings or printing |
8021 alloy as a specification for battery foil
| Specification | parameters |
|---|---|
| Alloy | 8021 |
| Temper | O (soft) |
| Thickness | 0.015mm – 0.05mm |
| Width | 100mm – 1000mm |
| Surface Treatment | One side bright, possibly with coatings or treatments |
| Tensile Strength | 60 MPa – 120 MPa |
| Elongation | 20% – 30% |
| Electrical Conductivity | Excellent |
8021 aluminum foil density
The density of aluminum foil can vary slightly depending on its thickness and manufacturing process. As a general guideline, the density of aluminum is approximately 2.70 g/cm³ or 2700 kg/m³. 8021 aluminum foil is usually very thin, often less than 0.2 mm (200 microns) thick, and its density is close to that of pure aluminum.
8021 aluminum foil melting point
The melting point of 8021 aluminum foil is the same as that of pure aluminum because 8021 is an alloy mainly composed of aluminum. The melting point of pure aluminum is approximately 660.3 degrees Celsius (1220.5 degrees Fahrenheit).
8021 aluminum foil vs 8011 aluminum foil
8021 and 8011 aluminum foils are similar in many ways as they both belong to the 8xxx series of aluminum alloys commonly used in a variety of packaging applications.
| Property | 8021 Aluminum Foil | 8011 Aluminum Foil |
|---|---|---|
| Alloy Composition | Primarily aluminum with some alloying elements | Primarily aluminum with some alloying elements |
| Alloy Series | 8xxx (8xxx indicates aluminum alloy series) | 8xxx (8xxx indicates aluminum alloy series) |
| Common Thickness Range | 0.018-0.2 mm (18-200 micrometers) | 0.009-0.2 mm (9-200 micrometers) |
| Typical Use | Pharmaceutical packaging, food packaging, and more | Food packaging, household use, and more |
| Strength and Durability | Generally good strength and durability | Generally good strength and durability |
| Barrier Properties | Excellent barrier properties, suitable for protecting sensitive products | Good barrier properties, adequate for most packaging needs |
| Surface Finish | Smooth surface finish | Smooth surface finish |
| Surface Treatment | Usually coated or laminated for specific requirements | Coated or laminated for specific requirements |
| Temper | Soft, half-hard, and hard temper available | Soft, half-hard, and hard temper available |
| Melting Point | Approximately 660.3°C (1220.5°F) | Approximately 660.3°C (1220.5°F) |
| Tensile Strength | Varies with temper and thickness | Varies with temper and thickness |
| Typical Temperatures for Use | Can be used at room temperature, refrigeration, and moderate oven temperatures | Can be used at room temperature, refrigeration, and moderate oven temperatures |
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