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Atomic Number and Symbol
| Atomic Number | 13 |
|---|---|
| Symbol | Al |
Typical Analysis and Properties
Typical GDMS chemical analysis certificates for every grade and alloy we supply, together with the key chemical and physical properties of aluminum.
Certificates
Typical Chemical Analysis
Select a group below to view the typical analysis certificates. Each document reports trace element impurity levels measured by Glow Discharge Mass Spectrometry (GDMS).
Pure Aluminum Grades
6 certificates
Typical analysis for standard high purity aluminum grades, 4N through 6N5 MBE.
Aluminum Alloys
4 certificates
Typical analysis for high purity aluminum alloy compositions used in specialised thin-film and deposition applications.
Copper, Nickel and Titanium
3 certificates
Typical analysis for high purity copper, nickel and titanium products.
About our analysis and quality
We pride ourselves on the ability to supply products that meet the exact requirements of our customers. Most products, other than commercial quantities, are vacuum packed to protect from contamination, and shipped with analysis certificates.
For Super High Purity products (5N to 6N), we provide Glow Discharge Mass Spectrometer (GDMS) analysis certificates which report trace element impurity levels to the highest accuracy available.
Reference
Chemical and Physical Properties of Aluminum
A technical reference for the key chemical and physical properties of aluminum, the material at the core of everything we supply.
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Atomic Mass and Number
| Atomic Mass | Approximately 26.98 u (atomic mass units) |
|---|---|
| Protons | 13 |
| Neutrons | Typically 14, since atomic mass is roughly the sum of protons and neutrons |
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Melting and Boiling Points
| Melting Point | 660.32 °C / 1220.58 °F |
|---|---|
| Boiling Point | 2519 °C / 4566.2 °F |
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Density and Phase
| Density | 2.70 g/cm³ |
|---|---|
| Phase at Room Temperature | Solid |
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Color and Luster
| Natural Color | Silvery-white |
|---|---|
| Luster | Metallic, providing a shiny and reflective appearance |
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Thermal and Electrical Conductivity
| Thermal Conductivity | High, making it an excellent material for heat dissipation applications |
|---|---|
| Electrical Conductivity | High, often used in electrical transmission lines and other conductive applications |
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Reactivity
Aluminum exhibits a range of reactivity depending on the elements it interacts with:
- With more positively charged elements (e.g. Fe, Si, Cu, Mn): these elements generally remain in the master alloy during electrolysis, indicating limited reactivity under these conditions.
- With more negatively charged elements (e.g. Na, Ca, Ba, Mg): such elements are ionized along with aluminum during electrolysis, suggesting a higher reactivity in these interactions.
- General reactivity: aluminum has a high affinity for oxygen, leading to rapid oxidation when exposed to air.
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Corrosion Resistance
Aluminum demonstrates significant corrosion resistance primarily due to the formation of a protective oxide layer on its surface. This oxide layer effectively shields the underlying metal from further corrosive reactions, making aluminum a reliable material for various environmental conditions and applications.
These properties make aluminum a versatile and valuable material in both industrial and high-tech applications, where its lightweight, conductivity, and resistance to corrosion are particularly advantageous.
Ready to Source High Purity Aluminum?
We supply 4N through 6N5 high purity aluminum in all forms, GDMS certified, with 1 to 2 day shipping worldwide.