Nov 13 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Forging
Hot working
Cold Working
Annealing
Hardening
Applications
Introduction
Aluminium / Aluminum alloys have high strength at subzero
temperatures. They also have high ductility. Aluminium / Aluminum 3105
alloy is 98% pure Aluminium / Aluminum alloy. It has high corrosion
resistance, and good weldability and formability.
The datasheet given below will discuss in detail about Aluminium /
Aluminum 3105 alloy.
Chemical Composition
The chemical composition of Aluminium / Aluminum 3105 alloy is
tabulated below.
| Element |
Content
(%) |
| Aluminium / Aluminum, Al |
99.0 |
| Manganese, Mn |
0.55 |
| Magnesium, Mg |
0.50 |
Physical Properties
The following table shows the physical properties of Aluminium /
Aluminum 3105 alloy.
| Properties |
Metric |
Imperial |
| Density |
2.6-2.8 g/cm3 |
0.0939- 0.101 lb/in3 |
| Melting point |
641°C |
1185°F |
Mechanical Properties
The mechanical properties of Aluminium / Aluminum 3105 alloy are
outlined in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
150 MPa |
21755 psi |
| Yield strength |
130 MPa |
18855 psi |
| Shear strength |
97 MPa |
14069 psi |
| Elastic modulus |
70-80 GPa |
10153-11603 ksi |
| Poisson's ratio |
0.33 |
0.33 |
| Elongation |
7% |
7% |
Thermal Properties
The thermal properties of Aluminium / Aluminum 3105 alloy are given
in the following table.
| Properties |
Metric |
Imperial |
| Thermal conductivity (@25°C/77°F) |
173 W/mK |
1201 BTU in/hr.ft².°F |
Other Designations
Other designations equivalent to Aluminium / Aluminum 3105 alloy
include ASTM B209.
Fabrication and Heat Treatment
Machinability
Aluminium / Aluminum 3105 alloy has average machinability.
However, its machinability can be increased in harder tempers than in
annealed condition. Oil lubricants are used for machining this alloy.
Forming
Aluminium / Aluminum 3105 alloy has good forming
characteristics. It is suggested that bend radii should be used in one
thickness to 2 t range for annealed H12, H14 and H16 tempers. Bend
radii of 2 to 7 t should be used for the H18 temper.
Welding
Aluminium / Aluminum 3105 alloy has good weldability. It can be
welded using arc welding method.
Heat Treatment
Aluminium / Aluminum 3105 alloy does not react to heat treatment
except during cold working.
Forging
Aluminium / Aluminum 3105 alloy can be forged at the
temperatures ranging from 372 to 510°C (700 to 950°F).
Hot working
Aluminium / Aluminum 3105 alloy can be hot worked at 205 to
372°C (400 to 700°F)
Cold Working
Aluminium / Aluminum 3105 alloy has good cold working
characteristics in the harder cold worked tempers.
Annealing
Aluminium / Aluminum 3105 alloy is annealed at 344°C (650°F)
followed by cooling in air.
Hardening
Aluminium / Aluminum 3105 alloy can be hardened only by cold
working in H12, 14, 16, 18 or 25 tempers.
Applications
Aluminium / Aluminum 3105 alloy is used in sheet metal work. It
is also used in manufacturing mobile homes, residential siding, and
rain carrying goods.