Nov 12 2012
Topics CoveredIntroductionChemical CompositionPhysical PropertiesMechanical PropertiesThermal PropertiesOther Designations
Magnesium is a silvery-white metal which is used as an alloy element for zinc, lead, aluminum, and other nonferrous alloys. Magnesium alloys are light weight and feature superior machinability and ease of casting. They are often anodized to enhance corrosion resistance. They are designated using the ASTM and SAE system in which the first part denotes the two main alloying elements in the alloy and the second part represents their percentages.
The following datasheet gives an overview of magnesium AZ80 alloy.
The chemical composition of magnesium AZ80 alloy is highlighted in the following table.
||7.80 - 9.20|
||0.20 - 0.80|
The following table shows the physical properties of magnesium AZ80 alloy.
The mechanical properties of magnesium AZ80 alloy are outlined in the following table.
|Yield strength (strain 0.200%)
|Compressive yield strength (at 0.2% offset)
|Shear modulus (typical for steel)
|Elongation at break (in 50 mm)
|Hardness, Brinell (500 kg load, 10 mm ball)
|Hardness, Knoop (estimated from Brinell)
|Hardness, Rockwell A (estimated from Brinell)
|Hardness, Rockwell B (estimated from Brinell)
|Hardness, Vickers (estimated from Brinell)
|Machinability (relative rating, 100 best)
The thermal properties of magnesium AZ80 alloy are given in the following table.
|Thermal expansion co-efficient (0-100°C/32-212°F)
||527 BTU in/hr.ft°F|
Other designations that are equivalent to magnesium AZ80 alloy include:
- ASTM A276
- ASTM A580
- ASTM A412