To explain the physical properties of metals like iron or sodium we need a more sophisticated picture than a simple particle model of atoms all lined up in close packed rows and layers, though this picture is correctly described as another example of a giant lattice held together by metallic bonding.
http://www.docbrown.info/page04/4_72bond5.htm
Nickel (Ni) is the fifth most abundant element in the earth, but it is rare in crustal rocks. Elemental nickel is a silvery, hard, ductile metal with a moderately high melting temperature and a relatively high specific gravity (8.9). The main use of nickel is as an alloy in steel and cast iron.
http://www.geology.ar.gov/minerals/metallic_descriptions.htm
Vanadium (V) is a metal with a moderate specific gravity (6.0) and a relatively high melting point (1710° C). Vanadium is often considered to be an uncommon element, but its abundance in the earth's crust is actually comparable to that of copper, nickel, and zinc.
http://www.geology.ar.gov/minerals/metallic_descriptions.htm
Thorium (Th) is a radioactive metallic element that, until the 1950’s, was known only by chemists and physicists. It is not abundant, but major supplies are in sands rich in monazite ((Ce,La, Nd,Th)PO4). Commercially, monazite is recovered as a by-product of the processing of titanium-bearing heavy-mineral sands.
http://www.geology.ar.gov/minerals/metallic_descriptions.htm
The third most abundant element in the earth’s crust, aluminum (Al) is, nevertheless, a relatively new metal to the human race. The commercial process allowing its recovery economically was not discovered until around the turn of the 20th century.
http://www.geology.ar.gov/minerals/metallic_descriptions.htm
There is a strong electrical force of attraction between these free electrons (mobile electrons or 'sea' of delocalised electrons) () and the 'immobile' positive metal ions (+) that form the giant lattice and this is the metallic bond.
http://www.docbrown.info/page04/4_72bond5.htm
(alloys of Al, Fe, steel etc.) and The physical and chemical properties of transition metals. BONDING IN METALS METAL STRUCTURE All metals have similar properties BUT, there can be wide variations in melting point, boiling point, density, electrical conductivity and physical strength.
http://www.docbrown.info/page04/4_72bond5.htm
Non-metallic inclusions are chemical compounds and nonmetals that are present in steel and alloys. They are the product of chemical reactions, physical effects, and contamination that occurs during the melting and pouring process.
https://en.wikipedia.org/wiki/Non-metallic_inclusions
See notes on Corrosion of Metals and Rust Prevention. Note on Alloy Structure via a very simplified diagram. An alloy is a mixture of a metal with other elements (metals or non-metals). Metals can be mixed together to make alloys to improve the metal's properties to better suit a particular purpose.
http://www.docbrown.info/page04/4_72bond5.htm
Titanium is used mainly in the form of titanium dioxide, although the metal is also used as an alloy. Titanium dioxide's main use is as a white pigment in paint, paper, and plastics. Minor uses of titanium minerals include ceramics, chemicals, welding-rod coatings, heavy aggregate, and steel-furnace flux.
http://www.geology.ar.gov/minerals/metallic_descriptions.htm
is steel metallic
No, steel is nonmetallic. No, steel is not metallic.