At Xometry, aluminum and its alloys are highly requested materials for CNC machined parts. This versatile metal has been in use for centuries and can be found in a wide range of applications, from manufacturing plants to household kitchens. Whether used in aircraft construction or for making everyday items like cooking pans, soda cans, and foil, aluminum plays a crucial role. This article delves into the history of aluminum, its various industrial applications, chemical properties, and the services offered by Xometry involving this metal.
What is Aluminum?
Aluminum, the most abundant metal on Earth, has a distinct silvery-white appearance. Its key characteristics include ductility, corrosion resistance, and nonmagnetic properties. Making up 8% of the Earth’s crust, aluminum is the most produced refined non-ferrous metal globally.
Discovery and History
The history of aluminum dates back to ancient Egypt, where it was used in pottery and ornaments. However, it was officially discovered by British chemist Humphry Davy in 1807 and later isolated by Danish chemist Hans Christian Ørsted in 1825. The development of the Hall-Héroult process by Charles Martin Hall and Paul Louis Toussaint Héroult in 1886 revolutionized aluminum processing and made it more affordable and widespread.
Atomic Weight, Symbols, and Names
On the periodic table, aluminum is represented by the symbol Al and has an atomic number of 13. It is known for its lightweight nature, strength, and excellent conductivity of electricity and heat, making it a valuable and versatile metal in various industries such as aerospace, construction, and transportation.
Characteristics
Despite being lightweight, aluminum is a durable and robust metal with exceptional electrical and thermal conductivity capabilities. Its ability to form bonds with oxygen and elements in a -3 state contributes to its versatility in various applications.
Metals, as classified by the Royal Society of Chemistry, are divided into three categories based on iron content: Ferrous metals (iron-containing), Non-ferrous metals (iron-free), and Alloys (mixtures of metals and elements).
These different types of metals possess unique properties related to their melting point, density, and malleability, influencing their suitability for a wide range of applications.
Steel
Steel, a ferrous alloy consisting primarily of iron and carbon, is the most commonly used metal worldwide. Its strength, malleability, and resistance to corrosion make it an ideal choice for industrial purposes.
Steel Uses and Applications
Every year, manufacturers produce nearly two billion tons of steel in various grades to accommodate projects of all sizes. The cost-effectiveness and versatility of steel contribute to its extensive use in both construction and manufacturing sectors.
Steel Alloys and Compositions
Steel is broadly categorized into three primary types: Carbon Steel (with varying carbon content), Alloy Steel (enhanced with additional elements for improved properties), and Stainless Steel (highly resistant to corrosion).
Advantages of Steel
One of the main advantages of steel is its recyclability, making it an environmentally friendly option for construction and manufacturing. Steel is also known for its high tensile strength, allowing for structures to be built with lighter materials and more open designs compared to other metals. Additionally, steel’s durability and resistance to fire make it a popular choice for building materials in high-rise construction.
Copper
Copper, renowned for its high electrical and thermal conductivity, has been a staple in industrial production for over 6,000 years. While offering numerous advantages, copper is gradually being replaced by aluminum and plastic due to cost considerations.
Uses/Applications
Copper is utilized in various industries for applications involving electronics, piping, telecommunication components, and artwork, credited for its durability and low-maintenance characteristics.
Copper Alloys and Compositions
In industrial settings, copper alloys such as brass and bronze are widely favored for their unique properties in combination with the beneficial attributes of copper.
Brass
Brass, a copper-zinc alloy, is malleable and commonly used in items like jewelry, art pieces, and musical instruments.
Bronze
Bronze, made with tin, phosphorus, or other elements, finds applications in various industries, from producing coins to developing ship parts and valves.
Iron, known for its strength, cost-efficiency, and widespread availability, is utilized in its pure form and in various alloys across different industries.
Iron Uses and Applications
Pure iron is employed in the manufacturing of cookware, heat-generating appliances, and heavy machinery, offering stability and safety in high-temperature environments.
Iron Alloys and Compositions
Iron alloys, including wrought iron and cast iron, are tailored with specific compositions and properties to meet diverse industrial needs.
Mead Metals is your expert
Mead Metals offers a diverse selection of steels, copper, brass, and bronze for a wide array of projects. With a wealth of experience in the metal industry, their expertise can assist in identifying the most suitable metal for any project, regardless of its scale.
Metals are commonly found in ores alongside various elements and are not naturally occurring in pure form underground. Essential for numerous industries and everyday items, metals demonstrate their versatility and importance in different sectors.
What Is Metal?
Defining characteristics such as inorganic nature, lustrous appearance, solid state, and conductive properties make metals indispensable in a vast range of applications, from automobile manufacturing to household cookware, owing to their durability and strength.
While gold is the softest known metal, easily transformable into foil or thin wires, metals like sodium and potassium have low melting points, and mercury remains in a liquid state under regular conditions. In contrast to mercury, iron exists as a solid and in its pure form. Metals are classified based on iron content and atomic structure, with ferrous metals containing iron and being prone to rust, while non-ferrous metals like zinc, copper, brass, lead, and aluminum do not contain iron and are non-magnetic.
Additionally, metals may be categorized by their atomic structure as reflected in the periodic table, with common groups including Alkaline metals, Alkaline Earth metals, and Transition metals. Metals within these groups exhibit similar characteristics, such as low melting points and susceptibility to corrosion.
types of Metals based on Iron content
Metals are grouped based on iron content into ferrous, non-ferrous, and metal alloy classifications. Ferrous metals, containing iron, are primarily represented by steel, which constitutes 90% of all metals produced. These metals are known for their strength, conductivity, magnetism, and recyclability.
Essential in construction, ferrous metals are extensively used in buildings, vehicles, tools, and machinery. While some ferrous metals may be vulnerable to rust, others, like wrought iron, exhibit remarkable corrosion resistance. Alloying techniques can further enhance properties such as rust resistance, wear resistance, and magnetic characteristics.
Non-ferrous metals, although more expensive than their ferrous counterparts, offer excellent workability, corrosion resistance, conductivity, and density. Metals like aluminum, copper, lead, and zinc find applications in diverse industries.
#3. Precious metal
Precious metals stand out for their rarity, value, stability, workability, beauty, high melting points, and conductivity. Historically esteemed for their unique characteristics, precious metals are highly resistant to corrosion, easily malleable, and scarce, contributing to their enduring value.
By alloying metals, manufacturers can create metal alloys with enhanced properties. Steel, an iron and carbon alloy, is renowned for its strength, corrosion resistance, and longevity, making metal alloys indispensable in various industrial applications.
Types of metal based on Periodic table ( Atomic Structure)
Metals are recognized for their lustrous appearance, density, conductivity, malleability, and ductility, collectively defining them as a distinct group despite variations in specific properties.
#1. Alkali Metals.
Alkali metals, located in Group IA on the far left of the periodic table, are highly reactive elements. Characterized by a consistent +1 oxidation state and lower density compared to other metals, alkali metals like lithium, sodium, and potassium readily lose electrons and form shiny surfaces that tarnish quickly in the presence of moisture and oxygen.
Due to their high reactivity, alkali metals are not found in elemental form in nature but rather as compounds or salts. To prevent reactions, alkali metals are stored under oil or kerosene to shield them from moisture.
Cesium, the most reactive alkali metal, vigorously reacts with water. All alkali metals display varying degrees of reactivity with water, with cesium and rubidium being more reactive than lithium.
With the exception of hydrogen, all alkali metals are found in nature as compounds rather than in their elemental state. Hydrogen, despite having a single valence electron, naturally exists as a diatomic gas (H₂).
- Lithium
- Sodium
- Potassium
- Rubidium
- Cesium
- Francium
#2. Alkaline Earth Metals.
Alkaline earth metals, positioned in Group IIA of the periodic table, typically exhibit a +2 charge when ionized. Although reactive, alkaline earth metals are generally more stable than alkali metals when part of a compound.
Physically, alkaline earth metals are hard, lustrous, and possess ductility and malleability, allowing them to be fashioned into wires and deformed without breaking easily.
- Beryllium
- Magnesium
- Calcium
- Strontium
- Barium
- Radium
#3. Transition Metals.
Transition metals typically feature at least one incomplete d or f subshell, resulting in diverse properties like multiple oxidation states and the formation of colored complexes. While elemental states are possible for metals like gold, copper, and silver, actinides and lanthanides are always part of natural compounds.
- Scandium
- Vanadium
- Chromium
- Manganese
- Iron
- And many more…
#4. Rare Earth Metals.
Located in the middle of the periodic table, rare earth elements encompass lanthanides and actinides. Lanthanides share chemical similarities, while actinides are predominantly artificially created due to their short half-lives.
- Thorium
- Uranium
- Plutonium
- Californium
- Mendelevium
- And more…
#5. Basic Metals.
Metalloids, such as Boron and Germanium, display a mix of metal and non-metal traits, positioning them between the two categories on the periodic table. They exhibit unique properties and characteristics that set them apart from pure metals and nonmetals.
- Boron
- Germanium
- Silicon
- Antimony
- Arsenic
- Tellurium
- Polonium
Physical Properties of Metals
Metals are versatile materials known for their malleability, ductility, and excellent thermal and electrical conductivity. They have a shiny appearance, strength, and emit clear ringing sounds when struck due to their unique sonorous quality. Metals are also renowned for their hardness, durability, and reliability in a wide range of applications.
Chemical Properties of Metals
- Chemical reactions with various substances: Metals can undergo reactions with water, acids, bases, and oxygen, resulting in the formation of different compounds and gases. For instance, sodium reacts vigorously with water to produce heat, while zinc reacts with hydrochloric acid to yield zinc chloride and hydrogen gas.
- Applications of metals in diverse fields: Metals play a vital role in industries such as transportation, aerospace, electronics, food processing, construction, healthcare, power generation, agriculture, and everyday household items. Their strength, durability, and conductivity make them indispensable for these applications.
- List of commonly used metals: Iron, magnesium, tungsten, mercury, gunmetal, and bismuth are examples of metals with distinct properties and diverse applications.
- Significance of iron and steel: Iron, though relatively weak and prone to corrosion in its pure form, becomes significantly stronger when alloyed with carbon to create steel. Alloy and stainless steel, in particular, offer enhanced strength, longevity, and resistance to corrosion for various industrial and construction purposes.
- Attributes and applications of aluminum: Aluminum, derived from bauxite, is a lightweight yet robust metal known for its exceptional corrosion resistance and good electrical conductivity. Its unique properties make it a preferred material for automotive and aerospace engineering as well as other manufacturing processes.
Aluminum, with its non-magnetic properties, is well-suited for a variety of technical applications.
#4. Magnesium.
Magnesium, a lightweight metal with strength comparable to aluminum, has become a popular choice for weight-saving applications.
It is commonly used in high-performance vehicles for components like wheel rims and engine blocks to enhance fuel efficiency.
However, magnesium is less resistant to corrosion compared to aluminum, necessitating careful alloy selection for increased durability.
#5. Copper.
Copper, widely utilized for its conductivity and versatility, finds applications in electrical wiring and cookware manufacturing.
Brass, a copper-zinc alloy, is valued for its mechanical properties and resistance to sparking, making it ideal for tools used in hazardous environments.
#6. Brass.
Bronze, typically made with copper and tin, offers high hardness, fatigue resistance, and corrosion resistance.
It is utilized in various applications such as marine equipment, reflectors, and sculptures due to its unique characteristics.
#7. Bronze.
Zinc, a non-ferrous metal, is widely recognized for its low melting point, corrosion resistance, and conductivity in alloys like brass.
Industrially, zinc is valued for its castability, corrosion resistance, and affordability, with potential uses in medical equipment manufacturing.
#8. Zinc.
Titanium alloys are prized for their exceptional strength-to-weight ratio, corrosion resistance, and high-temperature stability, making them popular in aerospace and medical applications.
Tungsten, known for its high strength and density, is commonly used in the form of tungsten carbide for cutting tools and heavy machinery.
Being denser than lead, tungsten is ideal for applications requiring high density and wear resistance.
#9. Titanium.
Collectively, these metals offer a diverse range of mechanical and chemical properties suitable for a variety of industries and applications.
Tungsten, a metal capable of withstanding extreme heat, is often alloyed with other metals for use in high-temperature environments.
One excellent example of this is in the manufacturing of rocket nozzles that require durable materials.
#11. Nickel.
Nickel is a common component in stainless steel alloys, contributing to their strength properties. Approximately 70% of nickel production is used in stainless steel manufacturing.
Nickel is also utilized in coinage, plating, and as an alloying agent in diverse applications.
#12. Cobalt.
Cobalt, a hard, silver-white metal, is employed in various applications such as alloys, magnets, and electroplating. It shares similar properties with iron and nickel.
Cobalt retains its magnetic properties at temperatures as high as 1150°C.
#13. Tin.
Tin, a soft and malleable metal, is used in bronze and pewter alloys. It demonstrates a unique phenomenon known as “tin cry” when bent.
Tin finds widespread use in various industrial applications.
#14. Lead.
Lead, known for its soft and dense characteristics, is commonly employed in a range of applications including ammunition, car batteries, and radiation shielding.
Despite its toxic nature, lead continues to play a crucial role in specific industries.
#15. Silicon.
Silicon, classified as a metalloid, is added to metal alloys to enhance weldability. It shares similarities with metals but does not conduct electricity.
#16. Chromium.
Chromium is utilized to increase the tensile strength of metal alloys and is essential in the development of superalloys for high-temperature applications.
#17. Lithium
Lithium, an alkali metal, is used to strengthen glass and ceramics. It finds diverse applications in the manufacturing sector.
#18. Gold.
Gold, a rare and valuable metal, sees use in jewelry, coinage, and decorative items. It boasts excellent corrosion resistance and conductivity of heat and electricity.
#19. Silver.
Silver, noted for its high conductivity, is widely employed across various industries and functions. Its unique properties make it highly desirable.
#20. Platinum.
Platinum, a dense metal, is resistant to corrosion and chemical reactions. It finds application in various industries owing to its distinctive properties.
#21. Mercury.
Mercury, a liquid metal at room temperature, is utilized in different industrial devices like thermometers and barometers.
#22. Gunmetal.
Gunmetal, a type of bronze, is employed for components requiring strength and durability, such as bearings and gears.
It also offers corrosion resistance, making it an ideal choice for use in steam pumps and valves.
Gunmetal showcases resistance to corrosion in industrial settings against various substances like nitrogen, methane, carbon dioxide, hydrogen sulfide, and mercury. It is commonly used in the manufacturing of steam and hydraulic castings, valves, mechanical gears, statues, buttons, and decorative fittings.
Uranium, a readily available radioactive element, is primarily found in mineral ore form. It is ductile, malleable, and exhibits moderate electrical conductivity. Uranium is crucial for electricity generation in commercial nuclear reactors.
Gallium, a soft silvery-white metal, is utilized in electronics as a silicon substitute due to its semiconductor properties. It possesses a low melting point, expands upon freezing, and can remain liquid at high temperatures. Gallium arsenide and gallium nitride are important compounds used in various devices.
Bismuth showcases a striking metallic appearance with a slightly reddish-grey hue. It is commonly alloyed with tin or cadmium for applications in fire detection systems and fire extinguishers. While bismuth may be brittle, alloying it with other metals can enhance its mechanical properties.
| Serial Number | Element Number | Chemical Symbol | Metallic Elements |
| 1 | 3 | Li | Lithium |
| Number | Atomic Mass | Symbol | Element |
| 91 | 115 | Mc | Moscovium |
| 92 | 116 | Lv | Livermorium |
What is Metal?
A metal is a material that has a shiny look and is good at conducting heat and electricity. They are typically flexible and can be pure elements like iron, mixtures like stainless steel, or compounds like polymeric sulfur nitride.
What are the Types of Metal?
Metals are divided into two main groups: ferrous (containing iron) and non-ferrous.
1. Iron makes up nearly 5% of the Earth’s crust.
2. Steel, despite its strength, is prone to rusting.
3. Other metals include copper, bronze, brass, aluminum, titanium, and lead.
What are the 10 examples of metals?
Various metals include aluminum, copper, iron, gold, lead, silver, titanium, uranium, and zinc. Alloys like bronze and steel are also commonly used. The science of studying metals is known as metallurgy.
What are the properties of metals?
Important characteristics of metals:
1. Malleability – metals can be shaped into thin sheets.
2. Ductility – metals can be formed into wires.
3. Conductivity – metals are efficient at transferring heat and electricity.
4. Luster – metals have a bright and shiny appearance.
5. Tensile strength – metals are strong under tension.
6. Sonorous – metals produce a clear ringing sound.
7. Hardness – metals are typically hard.
How many types of metals exist?
As per the Royal Society of Chemistry, there are 94 metals on the periodic table, categorized based on iron content and other considerations.