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Metals & Alloys
Metals & Alloys
Metals and alloys play a critical role in modern industry, touching nearly every aspect of daily life. They are essential in the construction, transportation, medical, energy, and technology sectors, and ongoing research continues to expand their applications and improve their performance. New alloys are constantly being developed to meet the specific demands of various industries, enhancing efficiency, sustainability, and safety.
Metals are naturally occurring elements characterized by a lustrous appearance, good electrical and thermal conductivity, ductility, and malleability. They are usually solid at room temperature (with the exception of mercury), and they tend to form metallic bonds with other metal atoms.
Common examples of metals include: Iron, Aluminum, Copper, Titanium, Chromium, Nickel, Zinc, and more
An Alloy is a mixture of two or more elements, where at least one element is a metal. Alloys often have properties that are different from those of the individual metals, such as increased strength, hardness, or resistance to corrosion. Common alloys include steel, bronze, and brass.
Common examples of alloys include: Steel, Stainless Steel, Brass, Bronze, and more
In industry, alloys are generally used more extensively than pure metals. This is primarily because alloys can be engineered to have specific properties that meet the demands of various applications. By combining different metals and elements, alloys can be tailored to have a unique balance of strength, durability, corrosion resistance, and other attributes that pure metals might not possess. This customization makes alloys more versatile and suited for a wider range of industrial applications.
Nonmetals & Metalloids
Nonmetals & Metalloids
Nonmetals are elements that typically lack the characteristics of metals. Nonmetals play crucial roles in various applications, such as oxygen in respiration, nitrogen in fertilizers, and carbon in organic compounds and fuels. General characteristics of nonmetals include:
Generally poor conductors of heat and electricity.
Often gaseous or brittle solids at room temperature.
Typically not malleable or ductile.
Usually have lower melting and boiling points than metals.
Tend to form anions or covalent bonds in chemical reactions.
Metalloids are elements that have properties intermediate between metals and nonmetals. Metalloids are vital in the technology industry, with silicon being a primary component in semiconductors, and they are also used in various other applications like solar cells and glass-making. General characteristics of metalloids include:
Can exhibit both metallic and nonmetallic properties.
Often semiconductors, meaning they conduct electricity better than nonmetals but not as well as metals.
Physical and chemical properties can be tailored to specific needs.
Industry Applications of Metals
Industry Applications of Metals
The use of metals/alloys/metalloids in industry today is significant, and varies depending on region and industry.
Metals and their kin are used in place of other materials primarily because of their defining characteristics: strength, durability, conductivity, and malleability. Metals are chosen when these properties align with the functional needs of the product or structure, making them suitable for a wide variety of industrial applications.
These properties make metals ideal for applications that require resistance to wear and tear, the ability to withstand high stress, efficient energy transfer, and adaptability to various shapes and forms. Their recyclability further adds to their appeal in many industries.
Other materials might be favored when different characteristics, such as light weight, flexibility, or insulation, are more critical to the application.
2.1✔ CHECKPOINT
2.1✔ CHECKPOINT
ID Metals
ID Metals
In the lab, correctly distinguish and identify at least one example of components made from the following metals/alloys, being used as a functional component on a piece of equipment (do NOT disassemble or damage any components/equipment):
Aluminum
Steel
Stainless Steel
Brass
Copper
Document and analyze all your examples:
Provide evidence/reasoning/proof the component is made of what you think it is
Determine, understand, and explain why the particular metal/alloy in question was chosen for each component (properties, cost, etc.)
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