Aluminium / Aluminum 1200 Alloy (UNS A91200)

Topics Covered

Chemical Composition
Physical Properties
Mechanical Properties
Other Designations


About 8.2% of the earth's crust is composed of aluminium / aluminum.

Aluminium / aluminum 1xxx series possesses 99% (min) purity. Aluminium / aluminum 1200 alloy is a wrought alloy with high thermal conductivity and reflectivity, and good corrosion resistance.

The following datasheet will provide more details about aluminium / aluminum 1200 alloy.

Chemical Composition

The following table shows the chemical composition of aluminium / aluminum 1200 alloy.

Element Content (%)
Aluminum, Al ≥ 99
Silicon, Si + Iron, Fe ≤ 1
Zinc, Zn ≤ 0.10
Copper, Cu ≤ 0.050
Titanium, Ti ≤ 0.050
Manganese, Mn ≤ 0.050
Other (each) ≤ 0.050
Other (total) ≤ 0.15

Physical Properties

The physical properties of aluminium / aluminum 1200 alloy are outlined in the following table.

Properties Metric Imperial
Density 2.70 g/cm3 0.0975 lb/in3

Mechanical Properties

The mechanical properties of aluminium / aluminum 1200-O alloy are tabulated below.

Properties Metric Imperial
Tensile strength 70 - 105 MPa 10152-15228 psi

Other Designations

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Equivalent material to aluminium / aluminum 1200 alloy is

  • Al 99.0
  • Alcoa-102
  • BA 99.0%
  • Star-99.2
  • Duricilium-T (99.0%)
  • Hiduminium-1C.


Aluminium / aluminum 1200 alloy is readily weldable by MIG and TIG methods. The commonly used filler metals are aluminium / aluminum 1050 and 4043 alloys. Inert gas welding is more suitable than gas or resistance welding as the resultant product is stronger and more corrosion resistant. This alloy has very good workability.


Aluminium / aluminum 1200 alloy is used in the following areas:

  • Construction and roofing
  • Holloware
  • Equipment and containers for food and chemical industries
  • Ship building
  • Fin-stocks
  • Bottle caps
  • Automobiles
  • Furniture and lighting
  • Sounding boards
  • Conductive materials

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