Whois & Analysis for ryerson.com

Aluminium or aluminum (in North American English) is a chemical element in the boron group with symbol Al and atomic number 13.

It is a silvery-white, soft, nonmagnetic, ductile metal.

By mass, aluminium makes up about 8% of the Earth's crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below.

Aluminium metal is so chemically reactive that native specimens are rare and limited to extreme reducing environments.

Instead, it is found combined in over 270 different minerals.

The chief ore of aluminium is bauxite.

An alloy is a mixture of metals or a mixture of a metal and another element.

Alloys are defined by a metallic bonding character.

An alloy may be a solid solution of metal elements (a single phase) or a mixture of metallic phases (two or more solutions).

Intermetallic compounds are alloys with a defined stoichiometry and crystal structure.

Zintl phases are also sometimes considered alloys depending on bond types (see also: Van Arkel-Ketelaar triangle for information on classifying bonding in binary compounds).

Carbon (from "coal") is a chemical element with symbol C and atomic number 6.

It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds.

Three isotopes occur naturally, C and C being stable, while C is a radioactive isotope, decaying with a half-life of about 5,730 years.

Carbon is one of the few elements known since antiquity.

A metal (from Greek μέταλλον métallon, "mine, quarry, metal") is a material (an element, compound, or alloy) that is typically hard, opaque, shiny, and has good electrical and thermal conductivity.

Metals are generally malleable—that is, they can be hammered or pressed permanently out of shape without breaking or cracking—as well as fusible (able to be fused or melted) and ductile (able to be drawn out into a thin wire).

About 91 of the 118 elements in the periodic table are metals, the others are nonmetals or metalloids.

Some elements appear in both metallic and non-metallic forms.

The ampere (SI unit symbol: A, dimension symbol: I), often shortened to "amp", is a unit of electric current.

In the International System of Units (SI) the ampere is one of the seven SI base units.

It is named after André-Marie Ampère (1775–1836), French mathematician and physicist, considered the father of electrodynamics.