Nov 14 2012
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Other Designations
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Cold Working
Annealing
Aging
Hardening
Applications
Introduction
Aluminium/Aluminum alloys have high strength at subzero
temperatures. The aluminium/aluminum 6262 alloy is a heat treatable and
free-machining alloy. It has good mechanical strength and corrosion
resistance.
The following datasheet gives an overview of the
aluminium/aluminum 6262 alloy.
Chemical Composition
The following table shows the chemical composition of the
aluminium/aluminum 6262 alloy.
| Element |
Content
(%) |
| Aluminium/Aluminum, Al |
96.8 |
| Magnesium, Mg |
1 |
| Silicon, Si |
0.60 |
| Bismuth, Bi |
0.6 |
| Lead, Pb |
0.6 |
| Copper, Cu |
0.28 |
| Chromium, Cr |
0.09 |
Physical Properties
The physical properties of the aluminium/aluminum 6262 alloy
are tabulated below.
| Properties |
Metric |
Imperial |
| Density |
2.6-2.8 g/cm3 |
0.0939- 0.101 lb/in3 |
| Melting point |
588°C |
1090°F |
Mechanical Properties
The mechanical properties of the aluminium/aluminum 6262 alloy
are
outlined in the following table.
| Properties |
Metric |
Imperial |
| Tensile strength |
400 MPa |
58015 psi |
| Yield strength |
380 MPa |
55115 psi |
| Shear strength |
240 MPa |
34809 psi |
| Fatigue strength |
90 MPa |
13054 psi |
| Elastic modulus |
70-80 GPa |
10153-11603 ksi |
| Poisson's ratio |
0.33 |
0.33 |
| Hardness |
120 |
120 |
Thermal Properties
The thermal properties of the aluminium/aluminum 6262 alloy
are given in
the following table.
| Properties |
Conditions |
| T
(ºC) |
Treatment |
| Thermal conductivity |
172 W/mK |
25 |
T9 |
Other Designations
Other designations that are equivalent to the
aluminium/aluminum 6262
alloy include:
- ASTM B210
- ASTM B211
- ASTM B221
- ASTM B467
- ASTM B483
- QQ A-225/10
- SAE J454
Fabrication and Heat
Treatment
Machinability
The aluminium/aluminum 6262 alloy is added with lead and
bismuth to
improve its machining characteristics. It can be smoothly machined
using high-speed or carbide tooling. Oil lubricant is used for heavy
cuts.
Forming
The aluminium/aluminum 6262 alloy can be formed using
conventional
methods.
Welding
The aluminium/aluminum 6262 alloy has good weldability. It can
be welded
using brazing process.
Heat Treatment
The aluminium/aluminum 6262 alloy is heat treated by annealing
and aging.
Cold Working
Cold working capacity of the aluminium/aluminum 6262 alloy is
different
in many of the common temper conditions. T6511, T6510, T6, and T651
tempers have average cold working capacity. T9 temper has poor cold
working capacity.
Annealing
The aluminium/aluminum 6262 alloy is annealed at 538°C
(1000°F) for a
sufficient period of time followed by quenching in hot water.
Aging
Aging of the aluminium/aluminum 6262 alloy can be performed at
340 to
350°F for 8 to 12 h to obtain different tempers. For example, T6 and
T62 tempers are aged for 8 h to form cold formed bar or rod, and for 12
h to form extruded shapes. The T4 and T42 tempers are formed by natural
aging at room temperature.
Hardening
The aluminium/aluminum 6262 alloy can be hardened by cold
working or by
a combination of aging and subsequent cold working.
Applications
The aluminium/aluminum 6262 alloy can be used in manufacturing
fittings,
nuts, couplings, screw machine products, and camera parts.