0.1mm 0.2mm aluminium sheet a1050

07/18 2025

In the rapidly evolving world of materials engineering, precision and purity stand as twin pillars upon which innovation thrives. The 0.1mm and 0.2mm aluminium sheet in alloy A1050 exemplify this, combining the marvel of ultra-thinness with the unmatched corrosion resistance and electrical conductivity innate to high-purity aluminum.

Unpacking A1050 Aluminium Alloy: The High-Purity Backdrop

Alloy A1050 belongs to the 1xxx series, characterized by a minimum purity of 99.5% aluminium—often termed ‘commercial pure’ aluminum. This exceptional purity endows the alloy with several technical advantages:

Corrosion Resistance: High resistance to atmospheric, chemical, and marine corrosion, with surface oxide film rapidly reforming when scratched.
Electrical and Thermal Conductivity: Approximately 61% IACS (International Annealed Copper Standard) conductivity, making it ideal for applications needing efficient electrical or thermal transfer.
Excellent Workability: Being relatively soft, it yields easily to cold working, enabling ultra-thin gauges such as 0.1mm and 0.2mm before forming or bending.

Property	Value (Approximate)
Aluminium Purity	99.5% min
Typical Thicknesses	0.1 mm, 0.2 mm
Electrical Conductivity	~61% IACS
Tensile Strength (annealed O temper)	~50-70 MPa
Density	2.71 g/cm³

Taking Thinness to the Next Level: Why 0.1mm and 0.2mm Matters

In aluminum sheet manufacturing, achieving ultra-thin gauges such as 0.1 mm or 0.2 mm is not trivial. The challenges arise from mechanized rolling constraints, uniform thickness tolerances, and mechanical integrity post-deformation.

Technical Features of 0.1mm & 0.2mm A1050 Sheets:

Uniform Thickness with Low Gauge Tolerance: The manufacturing process uses highly controlled cold rolling finishing followed by annealing to ensure minimal variation (±0.005 mm typically). This uniformity is a strict prerequisite in electronics and precision applications.
Flexibility and Formability: Due to its annealed temper (O), A1050 sheets at this thickness exhibit excellent bendability without cracking — a critical factor for complex folding or shaping.
Surface Quality: High-purity material in combination with controlled rolling produces a smooth, consistent surface finish needed in reflective substrates or foil laminates.
Oxide Layer Characteristics: Thin but strong oxide passivation layer forms naturally and repairs itself instantly, even at thin gauges.

Distinctive Applications at the 0.1mm and 0.2mm Threshold

Electronics and Electrical Industry:

High conductivity brought by 99.5% pure aluminum in ultra-thin sheets finds large use in fabricate capacitor electrodes, battery current collectors, and flexible circuit boards. The combination of thinness and conductivity reduces bulk and conduction losses in delicate layered devices.

Flexible Solar Photovoltaics:

As demand for lightweight / portable solar technologies escalates, ultra-thin A1050 offers an excellent choice for construction of the backing films for solar cells, due to its stable dimensionality, resistance to UV and oxidation, and excellent thermal management.

Packaging Solutions for Sensitive Products:

High purity and recyclability with exceptional barrier qualities have established the role of thin A1050 in pharmaceutical blister packs and luxury food packaging foil—where oxygen and moisture ingress control is critical.

Highly Reflective Surfaces and Insulation:

The high surface emissivity ratio of A1050 sheets lends themselves for use as interior foil cavity insulation, reflector coatings, or decorative internal panels in architecture and transport, combining aesthetics with functionality in thin form.

Technical Considerations & Implementation Standards

Production and selection of 0.1mm or 0.2mm sheets mandate adherence to stringent international specifications in chemical composition, temper status, and dimensional tolerance.

Standards Reference: - ASTM B209 — Covers Aluminum and Aluminum-Alloy Sheet and Plate specifications. - EN 485-2 — Defines mechanical properties in aluminum sheet products. - JIS H4000 — Japanese Industrial Standard applicable to colourful and roll processed aluminum foils.
Temper Specifications: Typically annealed anneal "O" temper, meaning fully soft and recrystallized aluminum, is used. This yields optimal mechanical softness facilitating cold forming with thickness maintained at 0.1 or 0.2 mm.
Chemical Composition Requirements Overview: