Aug 7 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Introduction
Magnesium Azxx alloys have moderate strength, good ductility and toughness and can be cast, formed, and forged.
The following sections will discuss in detail about magnesium AZ91B-F die cast alloy.
Chemical Composition
The chemical composition of magnesium AZ91B-F alloy is outlined in the following table.
Element |
Content (%) |
Aluminum, Al |
9 |
Zinc, Zn |
0.7 |
Copper, Cu |
0.30 |
Manganese, Mn |
0.13 |
Magnesium, Mg |
Remainder |
Physical Properties
The physical properties of magnesium AZ91B-F alloy are tabulated below.
Properties |
Metric |
Imperial |
Density |
1.81 g/cm3 |
0.0654 lb/in3 |
Melting point |
≥ 421°C |
≥ 790 °F |
Mechanical Properties
The following table shows mechanical properties of magnesium AZ91B-F alloy.
Properties |
Metric |
Imperial |
Tensile strength |
230 MPa |
33400 psi |
Yield strength |
150 MPa |
21800 psi |
Poisson’s ratio |
0.35 |
0.35 |
Elastic modulus |
44.8 GPa |
6500 ksi |
Elongation |
3% |
3% |
Hardness, Brinell |
63 |
63 |
Hardness, Knoop |
84 |
84 |
Hardness, Rockwell E |
75 |
75 |
Hardness, Vickers |
71 |
71 |
Machinability |
100 |
100 |
Thermal Properties
The thermal properties of magnesium AZ91B-F alloy are tabulated below.
Properties |
Conditions |
T (°C) |
Treatment |
Thermal conductivity |
71.13 W/mK |
0 |
F |
Thermal expansion |
26 x 10-6/°C |
20-100 |
F |
Other Designations
Equivalent materials to magnesium AZ91B-F alloy are as follows: