8011 Aluminum Coil

First, 8011 aluminum alloy core characteristics

8011 belongs to the Al-Fe-Si aluminum alloy (8xxx series), known for its high formability, good sealing and economy, and is a common material in the field of packaging and container manufacturing. Its core features are as follows:

1. Chemical composition (typical value)

Fe (Iron) : 0.5-0.7% - improved strength and heat resistance

Si (Silicon) : 0.4-0.6% - forms a dispersion strengthened phase with Fe

Other: Residual Al, including trace Cu, Mn (total ≤0.1%).

2. Physical properties

Density: 2.71 g/cm³ (close to pure aluminum)

Melting point: about 655°C

Electrical conductivity: approximately 58% IACS (close to 61% of pure aluminum)

Thermal expansion coefficient: 23.6×10⁻⁶/K (suitable for glass, plastic composite).

3. Mechanical properties (after O annealing)

Typical performance indicators

Tensile strength (UTS) 80-120 MPa

Yield strength (YS) 30-50 MPa

Elongation (%) 20-30%

Hardness (HV) 25-35

4. Strengths and weaknesses

Advantages:

Excellent deep stamping performance (O state elongation is high, suitable for complex forming);

High sealing (dense surface after rolling, strong permeability resistance);

Low cost (raw material price is lower than 3xxx/5xxx series).

Weaknesses:

Low strength (not applicable to load-bearing structures);

Average weldability (special solder and process required).

8011 aluminum coil production process and specifications

8011 aluminum coil is produced by the combined hot-cold rolling process, and its process flow and typical parameters are as follows:

1. Production process flow

Casting: Control Fe/Si ratio to avoid coarse intermetallic compounds;

Hot rolling: 480-520°C rolling to medium thick plate (initial thickness 10-30mm);

Cold rolling: multi-pass rolling to the target thickness (usually 0.1-3mm), the intermediate need to be softened by annealing;

Annealing treatment: 340-380°C after heat preservation, slow cooling, O state high plasticity.

2. Typical specifications

Thickness range: 0.1mm-3mm (ultra-thin roll can reach 0.006mm, but special rolling mill is required);

Width range: 100mm-2000mm (customizable slitting);

Volume weight: 500kg-5 tons (adjusted according to equipment capacity).

3. Material status

O state (annealed state) : soft state, the highest elongation, suitable for deep stamping;

H18 (full hard) : unannealed after cold rolling, strength increased but plasticity poor;

H22/H24: partially hardened, balancing strength and formability.

Third, 8011 aluminum coil core application field

With its excellent formability and sealing, 8011 aluminum coil is mainly used in packaging, containers and light industrial products:

1. Packaging industry

Food packaging: processed into lunch box, medicine foil, chocolate lining after rolling;

Flexible packaging composite: composite with plastic film (such as milk Tetra Pak aluminum layer).

2. Container manufacturing

Can lid/pull ring: ultra-thin roll stamping;

Toothpaste tubes, cosmetic tubes: produced by extrusion-spinning process.

3. Household appliances and daily necessities

Heat fin substrate: stamped into electronic device heat fin;

Luminaire reflector: high reflectivity after surface polishing.

4. Industrial materials

Cable shield layer: rolled thin tape winding protection cable;

Building insulation film: composite with PET for building insulation.

Four, 8011 aluminum roll vs other packaging aluminum roll comparison

Features 8011 Aluminum coil 1060 aluminum coil (1xxx series) 3003 aluminum coil (3xxx series)

Tensile strength (MPa) 80-120 (O state) 60-100 (O state) 110-150 (O state)

Elongation (%) 20-30 25-35 15-25

Good corrosion resistance (better than 1xxx series) Excellent (pure aluminum corrosion resistance) Excellent (including Mn corrosion resistance)

Typical uses food containers, composite packaging capacitor foils, daily necessities kitchenware, chemical containers

Low cost (just over 1060) Minimum medium

5. Use precautions and market suggestions

Processing points

Stamping lubrication: low viscosity lubricating oil should be used to prevent mold sticking;

Surface treatment: Anodizing improves corrosion resistance (e.g. for food contact surfaces);

Thickness control: Ultra-thin rolls (<0.2mm) require precision rolling to avoid edge cracking.

Material selection suggestion

O coil is preferred for deep stamping (such as can lid);

If a certain strength is required, optionally H24 state (such as heat sink substrate).

Market supply

8011 aluminum coil is a commodity grade material, and China is the main producer (such as Nanshan Aluminum, Chinalco);

International standards: in line with GB/T 3198, EN 546 and other specifications.

Environmental protection trend

Replacement of plastic packaging core materials (recovery rate > 95%);

Note food grade certification (e.g. FDA, LFGB).

Vi. Summary

The 8011 aluminum coil is the ideal choice for lightweight packaging and container manufacturing, combining economy and processing adaptability;

It is suitable for the thin-wall forming needs of food, daily chemical, household appliances and other industries, but the strength limits its structural use;

Under the trend of sustainable packaging, 8011 aluminum coil market demand continues to grow, especially in the field of alternative plastics.