Aluminium Alloys
Comparison Table of Casting Characteristics of Major Aluminium Casting Alloys
|
|
||||||||
|
Tensile Strength (N/mm2) |
140-170 |
160-190 |
95-120 |
170 |
180 |
130-150 |
140 |
215 |
|
Elongation (%) |
3 |
5 |
3-5 |
2 |
1.5 |
2 |
1 |
4 |
|
Brinell Hardness |
50-70 |
50-55 |
75-85 |
85 |
85 |
55-65 |
70-85 |
70 |
|
Density (g/cm3) |
2.65 |
2.65 |
2.68 |
2.7 |
2.79 |
2.68 |
2.75 |
2.81 |
|
Freezing range (degC approx.) |
642-580 |
575-565 |
575-550 |
620-550 |
580-520 |
615-550 |
605-525 |
615-570 |
|
Thermal Con (cal/cm2/cm/deg C @ 25degC) |
0.33 |
0.34 |
0.35 |
0.34 |
0.23 |
0.36 |
0.37 |
0.35 |
|
Electrical Con (% copper std. @ 20degC) |
31 |
37 |
38 |
39 |
24 |
39 |
27 |
35 |
|
Machinability |
E |
P |
F |
G |
G |
G |
G |
G |
|
Corrosion Resistance |
E |
E |
G |
G |
F |
E |
G |
E |
|
Electro Plating Suitability |
F (2) |
F (1) |
F (1) |
F (1) |
F |
F |
G |
F |
|
Non Spark |
No |
No |
No |
No |
No |
No |
No |
No |
|
Casting Characteristics - Sand Casting |
F |
E |
G |
G |
F* |
E |
G |
G |
|
Casting Characteristics - Gravity Die Casting |
F |
E |
G |
G |
F |
E |
E |
F |
|
Casting Characteristics - High Pressure Die Casting |
F |
G |
* |
* |
E |
G |
G |
F |
|
Material Cost (£/kg - Dec 2011) |
£2.20 |
£1.95 |
£1.94 |
£1.94 |
£1.76 |
£1.92 |
£1.79 |
£2.20 |
E = Excellent
G = Good
F = Fair
P = Poor
U = Unsuitable
* = Not normally used in this form
1 = These alloys, containing Silicon, require a modification treatment for good adhesion
2 = Can be plated, but not recommended
Trying to figure out how aluminium specifications from different regions translate to the alloys used domestically can be confusing.
Our Global Standards Chart will help you to compare and contrast the different specifications of aluminium alloys between the UK and other countries such as Japan, France, Italy, Germany, and the United States.
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