Unit 5 metals
The metals are found in nature forming minerals or in a pure state.
Enviromental impact of metals
What are metals
METALS
Obtention process
Nonferrous metals
Ferrous metals
Alloys
Properties
What are metals
Metals are materials of great importance, due to their properties and the technical qualities they present, wich makes them essential to manufacture all kinds of objects.
Obtation process
The process and transformations that minerals undergo to obtain metallic materials are usually complex and expensive. The extraction of minerals is performed in an open pit or underground mines. Almost all metals are found in solid state in nature, except mercury and gallium. Next, the useful part is is separate, called ore, from the rest of the materials, called gangue. Finally transformation such as calcination in ovens or electrolysis are carried out to obtain the metal.
Alloys
It is a mixture of a metal and other elements. (Metals or not) very used in industry to improve the properties of a metal. Types of alloys Steet, sranless, bronze, brass and foundry.
Properties
PHYSICAL: -Good electric, thermal and sound conductors. -Characteristics shine. -Dense and heavy material. CHEMICAL: -Ferrous metals get oxidation. -Non ferrous metals such as copper, alaninium, silver or gold resist better to oxydation. MECHANICAL PROPERTIES: -Very ductile -Very malleable -Are resistant to stresses
Ferrous metals
They contein iron in its composition. IRON: -Good magnety properties. -Very brittle and difficult to handdle. STEEL: -Good mechanical properties. -Maelleable and ducttle Applications: Estructures, tools... FOUNDRY: -Black color -Brattle and hard -Resist better for corrosion. Applications: Radiators, lampost...
Non-ferrous metals
They dont hace iron in its properties. COPPERR: -Soft and red colour -High hermic and electric conductivity. -Resistant to corrosion. Applications: Cables and pipes... TIN: -Very soft, bright white in colour. -Ressistant to corriosion. -Is very maelleable and ductile. Applications: Tinplate and soft soldering... ZINC: -Blue and gray. -Its used it in galvanitation. Applications: Gravamized...
LEAD: -Soft and heavy. -Hight thermal conductivity. -Very malleable. Applications: Batteries, radation, shields... ALUMINIUM: -Low density. -Very light. -High conductiviyt. -Resistant to corrosion. Applications: Bicycles, utensilies...
Enviromental impact of metals
The greetest envitomental impact of mining, both in open-pit and under ground mines, is one degration of the landscape, since it produces significant changes as a result or moring large amounts of materials, water pollution and production of fust. On the other hands, the metallurgical industry is considered one of the most polluting , due to the emission of glases that are harmful to the enviromental, the high energy consumption and the production of wastle that can become toxic.
Unit 5 metals
Diego Eduardo Grande Bustillos
Created on January 30, 2026
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Transcript
Unit 5 metals
The metals are found in nature forming minerals or in a pure state.
Enviromental impact of metals
What are metals
METALS
Obtention process
Nonferrous metals
Ferrous metals
Alloys
Properties
What are metals
Metals are materials of great importance, due to their properties and the technical qualities they present, wich makes them essential to manufacture all kinds of objects.
Obtation process
The process and transformations that minerals undergo to obtain metallic materials are usually complex and expensive. The extraction of minerals is performed in an open pit or underground mines. Almost all metals are found in solid state in nature, except mercury and gallium. Next, the useful part is is separate, called ore, from the rest of the materials, called gangue. Finally transformation such as calcination in ovens or electrolysis are carried out to obtain the metal.
Alloys
It is a mixture of a metal and other elements. (Metals or not) very used in industry to improve the properties of a metal. Types of alloys Steet, sranless, bronze, brass and foundry.
Properties
PHYSICAL: -Good electric, thermal and sound conductors. -Characteristics shine. -Dense and heavy material. CHEMICAL: -Ferrous metals get oxidation. -Non ferrous metals such as copper, alaninium, silver or gold resist better to oxydation. MECHANICAL PROPERTIES: -Very ductile -Very malleable -Are resistant to stresses
Ferrous metals
They contein iron in its composition. IRON: -Good magnety properties. -Very brittle and difficult to handdle. STEEL: -Good mechanical properties. -Maelleable and ducttle Applications: Estructures, tools... FOUNDRY: -Black color -Brattle and hard -Resist better for corrosion. Applications: Radiators, lampost...
Non-ferrous metals
They dont hace iron in its properties. COPPERR: -Soft and red colour -High hermic and electric conductivity. -Resistant to corrosion. Applications: Cables and pipes... TIN: -Very soft, bright white in colour. -Ressistant to corriosion. -Is very maelleable and ductile. Applications: Tinplate and soft soldering... ZINC: -Blue and gray. -Its used it in galvanitation. Applications: Gravamized...
LEAD: -Soft and heavy. -Hight thermal conductivity. -Very malleable. Applications: Batteries, radation, shields... ALUMINIUM: -Low density. -Very light. -High conductiviyt. -Resistant to corrosion. Applications: Bicycles, utensilies...
Enviromental impact of metals
The greetest envitomental impact of mining, both in open-pit and under ground mines, is one degration of the landscape, since it produces significant changes as a result or moring large amounts of materials, water pollution and production of fust. On the other hands, the metallurgical industry is considered one of the most polluting , due to the emission of glases that are harmful to the enviromental, the high energy consumption and the production of wastle that can become toxic.