1. Metal Types 1.Steel 2.Aluminium 3.Copper 4.Nickel

2. Metals Metals in general have high electrical conductivity which depends on their valency of ions, thermal conductivity, luster and density, and the ability to be deformed under stress without cleaving. [3] While there are several metals that have low density, hardness, and melting points, these (the alkali and alkaline earth metals) are extremely reactive, and are rarely encountered in their elemental, metallic form. Optically speaking, metals are opaque, shiny and lustrous. This is because visible lightwaves are not readily transmitted through the bulk of their microstructure. The large number of mobile electrons in any typical metallic solid (element or alloy) is responsible for the fact that they can never be categorized as transparent materials.electrical conductivity thermal conductivitylusterdensity cleaving [3]alkalialkaline earthlustrousmicrostructure transparent materials The majority of metals have higher densities than the majority of nonmetals. [3] Nonetheless, there is wide variation in the densities of metals; lithium is the least dense solid element and osmium is the densest. The high density of most metals is due to the tightly packed crystal lattice of the metallic structure. The strength of metallic bonds for different metals reaches a maximum around the center of the transition metal series, as those elements have large amounts of delocalized electrons in tight binding type metallic bonds. However, other factors (such as atomic radius, nuclear charge, number of bonding orbitals, overlap of orbital energies, and crystal form) are involved as well. [3]. Most non-ferrous metals can be recycled many times during their life cycle.densities [3]lithiumosmiumtransition metaltight binding typeatomic radiusnuclear chargeorbitalscrystal form [3]

3. Metals- Steel The physical properties of steel include high strength, low weight, durability, ductility, and resistance to corrosion. Steel, as we all know, offers great strength though it is light in weight. In fact, the ratio of strength to weight for steel is the lowest than any other building material that are available to us. The term ductility means steel can be molded easily to form any desired shape. Unlike the constituent element iron, steel does not corrode easily, on being exposed to moisture and water Today, steel is one of the most common materials in the world, with more than 1.3 billion tons produced annually. It is a major component in buildings, infrastructure, tools, ships, automobiles, machines, appliances, and weapons. Modern steel is generally identified by various grades defined by assorted standards organizations.automobilesstandards organizations A stainless steel gravy boat

4. Metals - Aluminium Light, easily sculpted and durable, it is now used in advanced engineering as the bodywork for jets and sports cars. The amazing, unique qualities of this fundamental metal give it a huge array of possible applications, from transport, packaging, electrical application, medicine, and construction of homes and furniture. Since aluminium is extraordinarily strong, it is fundamental to both the automobile and the air travel industries. It is a well-known fact that aluminum does not rust. ALUMINIUM Fan, France, 1866 August Luce Smithsonian, Washington DC ALUMINIUM Lockheed Lounge, 1986 Marc Newson

5. Metals - Copper Copper is easily stretched, molded, and shaped; is resistant to corrosion; and conducts heat and electricity efficiently. As a result, copper was important to early humans and continues to be a material of choice for a variety of domestic, industrial, and high-technology applications today. Presently, copper is used in building construction, power generation and transmission, electronic product manufacturing, and the production of industrial machinery and transportation vehicles. Old copper utensils displayed in a Jerusalem restaurant.

6. Metals - Nickel Nickel is a silvery-white metal with a slight golden tinge that takes a high polish Nickel is used in many products some of you may use everyday including electric guitar strings, magnets and rechargeable batteries. The magnetic properties of nickel actually make it very important for use in computer hard drives. Nickel is added to a very important metal alloy- stainless steel. Stainless steel has numerous applications. It is used in cookware, cutlery, kitchen appliances, hardware, surgical instruments, storage tanks, firearms, car headlights, jewelery and watches. Dutch coins made of pure nickel