Jul 31 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Applications
Introduction
Magnesium AZ31B-H24 alloy is available in the form of hard rolled sheets and is a medium strength alloy. This datasheet will elaborate on the properties and applications of this alloy.
Chemical Composition
The following table provides the chemical composition of magnesium AZ31B-H24 alloy.
|
Element |
Content (%) |
|
Magnesium, Mg |
97 |
|
Aluminum, Al |
2.5-3.5 |
|
Zinc, Zn |
0.60-1.4 |
|
Manganese, Mn |
≥0.20 |
|
Silicon, Si |
≤0.10 |
|
Copper, Cu |
≤0.050 |
|
Calcium, Ca |
≤0.040 |
|
Iron, Fe |
≤0.0050 |
|
Nickel, Ni |
≤0.0050 |
Physical Properties
The physical properties of magnesium AZ31B-H24 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
1.77 g/cc |
0.0639 lb/in³ |
|
Melting Point |
605-630°C |
1120-1170°F |
Mechanical Properties
The mechanical properties of magnesium AZ31B-H24 alloy are listed in the table below.
|
Properties |
Metric |
Imperial |
|
Tensile Strength |
290 MPa |
42100 psi |
|
Yield strength (@strain 0.200%) |
220 MPa |
31900 psi |
|
Compressive Yield Strength (at 0.2% offset) |
180 MPa |
26100 psi |
|
Ultimate Bearing Strength |
495 MPa |
71800 psi |
|
Bearing Yield Strength |
325 MPa |
47100 psi |
|
Elongation at break (in 50 mm) |
15 % |
15 % |
|
Elastic Modulus (in tension) |
45 GPa |
6530 ksi |
|
Poisson's ratio |
0.35 |
0.35 |
|
Shear Modulus |
17 GPa |
2470 ksi |
|
Shear Strength |
160 MPa |
23200 psi |
|
Machinability (relative rating, 100=Best) |
100 |
100 |
|
Hardness, Brinell (500 kg load, 10 mm ball) |
73 |
73 |
|
Hardness, Knoop (estimated from Brinell) |
96 |
96 |
Thermal Properties
The following table outlines the thermal properties of magnesium AZ31B-H24 alloy.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@ 0.000-100°C/32-212°F) |
26 µm/m°C |
14.4 µin/in°F |
|
Thermal Conductivity |
96 W/mK |
666 BTU in/hr.ft².°F |
Other Designations
Some of the other designations that are used to denote magnesium AZ31B-H24 alloy are:-
Applications
Magnesium AZ31B-H24 alloy is used in aircraft fuselage, cell phones and camera cases, textile machinery and concrete tools.