Aluminum 1180 Alloy (UNS A91180)

Topics Covered

Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties

Introduction

Aluminium/aluminum was first commercially used on a large scale to manufacture cookware. It is widely used in various sectors such as marine, automobile, and building, as it is easy to fabricate, provides uniform quality, and is cost-effective.

Aluminium/aluminum is commonly alloyed with magnesium, copper, manganese, silicon and zinc. Aluminium / aluminum 1180 alloy is a wrought alloy type with good corrosion resistance.

The following datasheet will provide more details about aluminium / aluminum 1180 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 1180 alloy.

Element Content (%)
Aluminum, Al ≥ 99.8
Silicon, Si ≤ 0.090
Iron, Fe ≤ 0.090
Vanadium, V ≤ 0.050
Zinc, Zn ≤ 0.030
Gallium, Ga ≤ 0.030
Magnesium, Mg ≤ 0.020
Titanium, Ti ≤ 0.020
Manganese, Mn ≤ 0.020
Copper, Cu ≤ 0.010

Physical Properties

The physical properties of aluminium / aluminum 1180 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.705 g/cm3 0.09772 lb/in3
Melting point 650 - 658°C 1200 - 1220 °F

Mechanical Properties

The mechanical properties of aluminium / aluminum 1180 alloy are tabulated below.

Properties Metric Imperial
Tensile strength 125 MPa 18100 psi
Yield strength 115 MPa 16700 psi
Poisson’s ratio 0.33 0.33
Elastic modulus 67 GPa 9720 ksi
Shear modulus 25 GPa 3630 ksi
Elongation at break 5% 5%
Shear strength 80 MPa 11600 psi
Hardness, Brinell (@load of 500 kg with 10 mm ball) 30 30

Thermal Properties

The thermal properties of aluminium / aluminum 1180 alloy are tabulated below.

Properties Metric Imperial
Thermal expansion co-efficient (@20-100°C/68-212°F) 23.6 µm/m°C 13.1 µin/in°F
Thermal conductivity 234 W/mK 1620 BTU in/hr.ft².°F

 

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