Jun 17 2013
Topics Covered
Introduction
Chemical Composition
Mechanical Properties
Other Designations
Fabrication
Machinability
Workability
Applications
Introduction
Magnesium alloys are some of the easiest metals to machine with excellent strength-to-weight ratio. They have good corrosion resistance and ductility. There are several types of magnesium alloys in both cast and wrought formats.
The following sections will discuss in detail about magnesium AZ80A alloy.
Chemical Composition
|
Element |
Content (%) |
|
Aluminum, Al |
8.50 |
|
Zinc, Zn |
0.50 |
|
Manganese, Mn |
0.15 |
|
Magnesium, Mg |
Remainder |
Mechanical Properties
The following table shows mechanical properties of magnesium AZ80A alloy.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
290 MPa |
42060 psi |
|
Yield strength |
200 MPa |
29007 psi |
|
Elongation |
6% |
6% |
Other Designations
Equivalent materials to magnesium AZ80A alloy is
-
ASTM B107
-
ASTM B91
-
AIR/AFNOR G-A7Z1
-
QQ-M-40B
-
QQ-M-31B
Fabrication
Machinability
Machinability of magnesium AZ80A alloy is possible and requires moderate feed, high cutting speed, modest cut depth, and plenty of chip clearance.
Workability
Workability of magnesium AZ80A alloy requires hot working from 260°-288°C (500°-550°F). It is recommended that hammer forging be avoided.
The material has to be pressed to forge into shape. It can be readily extruded.
Applications
Magnesium AZ80A alloy is used in the following application areas:
-
Hydraulic cylinders
-
Aircraft engine parts
-
Supercharger components
-
Screw machine components