Aluminium Alloy 1100

Aluminium Alloy 1100 is a commercially pure aluminum alloy, belonging to the 1xxx series (99% minimum aluminum content). It is one of the most widely used non-heat-treatable alloys, valued for its excellent formability, corrosion resistance, and high ductility.

Request A Quick Quote

Chemical Composition

Element	Content (%)
Aluminum (Al)	≥99.0
Silicon (Si)	≤0.15
Iron (Fe)	≤0.70
Other Impurities	≤0.25

Note: The low impurity content makes it "commercially pure," ideal for applications requiring high ductility and corrosion resistance.

Key Properties

Mechanical Properties

Property	Typical Value (Temper: O)
Tensile Strength	90-110 MPa
Yield Strength (0.2% offset)	35-50 MPa
Elongation at Break	20–30%
Hardness (Rockwell B)	25–35

Temper Designations: Commonly used in the O (annealed) temper for maximum ductility or H12/H14 (strain-hardened) for moderate strength.

Physical Properties

Property	Value
Density	2.7 g/cm³
Melting Point	643–657°C
Thermal Conductivity	205 W/m·K
Electrical Conductivity	61% IACS (International Annealed Copper Standard)
Thermal Expansion Coefficient	23.1×10⁻⁶/°C (20–100°C)

Advantages

High Purity

Low impurity content ensures consistency in chemical and physical properties.

Cost-Effective

Among the least expensive aluminum alloys due to simple processing and abundant availability.

Recyclability

100% recyclable without loss of properties, aligning with sustainability goals.

Contact Our Support Team

Standards and Specifications

ASTM	B209 (sheet/plate), B221 (extrusions), B233 (wire), B479 (foil).
ISO	ISO 6892 (mechanical testing), ISO 26204 (aluminum alloy designations).
UNS	A91100 (United States Numbering System).