May 17 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Applications
Introduction
Aluminium / aluminum 2000 series has copper as the key alloying element. When the alloys from this series are heat-treated, the mechanical properties are similar and/ or better than those of medium steel. Aluminium / aluminum 2025 alloy is a heat treatable wrought alloy.
The following datasheet will provide more details about aluminium / aluminum 2025 alloy.
Chemical Composition
The following table shows the chemical composition of aluminium / aluminum 2025-T6 alloy.
|
Element |
Content (%) |
|
Aluminum, Al |
90.9 - 95.2 |
|
Copper, Cu |
3.9 - 5.0 |
|
Iron, Fe |
≤ 1 |
|
Silicon, Si |
0.50 - 1.2 |
|
Manganese, Mn |
0.40 - 1.2 |
|
Zinc, Zn |
≤ 0.25 |
|
Titanium, Ti |
≤ 0.15 |
|
Chromium, Cr |
≤ 0.10 |
|
Magnesium, Mg |
≤ 0.050 |
|
Other (each) |
≤ 0.050 |
|
Other (total) |
≤ 0.15 |
Physical Properties
The physical properties of aluminium / aluminum 2025-T6 alloy are outlined in the following table.
|
Properties |
Metric |
Imperial |
|
Density |
2.81 g/cm³ |
0.102 lb/in³ |
|
Melting point |
521 - 641°C |
970 - 1185°F |
Mechanical Properties
The mechanical properties of aluminium / aluminum 2025-T6 alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
400 MPa |
58000 psi |
|
Yield strength |
255 MPa |
37000 psi |
|
Elongation at break (@diameter 12.7 mm/0.500 in) |
19% |
19% |
|
Poisson’s ratio |
0.33 |
0.33 |
|
Elastic modulus |
71.7 GPa |
10400 ksi |
|
Shear strength |
241MPa |
35000 psi |
|
Hardness, Brinell (@load 500 kg; thickness 10.0 mm/1100 lb;0.394 in) |
110 |
110 |
|
Hardness, Knoop (converted from Brinell hardness value) |
138 |
138 |
|
Hardness, Rockwell A (converted from Brinell hardness value) |
44.2 |
44.2 |
|
Hardness, Rockwell B (converted from Brinell hardness value) |
69 |
69 |
|
Hardness, Vickers (converted from Brinell hardness value) |
124 |
124 |
Thermal Properties
The thermal properties of aluminium / aluminum 2025-T6 alloy are tabulated below.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@20-100°C/68-212°F) |
22.7µm/m°C |
12.6 µin/in°F |
|
Thermal conductivity |
154 W/mK |
1070 BTU in/hr.ft².°F |
Applications
Aluminium / aluminum 2025 alloy is chiefly used in the following areas:
-
Aircraft structures and propellers
-
Automotive bodies
-
Screw fittings.