Metals

Martensite, named after the German metallurgist Adolf Martens (1850–1914), most commonly refers to a very hard form of steel crystalline structure, but it can also refer to any crystal structure that is formed by diffusionless transformation.

Actinium is a radioactive chemical element with symbol Ac (not to be confused with the abbreviation for an acetyl group) and atomic number 89, which was discovered in 1899.

Americium is a radioactive transuranic chemical element with symbol Am and atomic number 95.

Berkelium is a transuranic radioactive chemical element with symbol Bk and atomic number 97.

Californium is a radioactive metallic chemical element with symbol Cf and atomic number 98.

Curium is a transuranic radioactive chemical element with symbol Cm and atomic number 96.

Dubnium is a chemical element with symbol Db and atomic number 105.

Fermium is a synthetic element with symbol Fm and atomic number 100.

Flerovium is a superheavy artificial chemical element with symbol Fl and atomic number 114.

Lanthanum is a soft, ductile, silvery-white metallic chemical element with symbol La and atomic number 57.

Lawrencium is a synthetic chemical element with chemical symbol Lr (formerly Lw) and atomic number 103.

Livermorium is a synthetic superheavy element with symbol Lv and atomic number 116.

Mendelevium is a synthetic element with chemical symbol Md (formerly Mv) and atomic number 101.

Metallic bonding arises from the electrostatic attractive force between conduction electrons (in the form of an electron cloud of delocalized electrons) and positively charged metal ions.

Neptunium is a chemical element with symbol Np and atomic number 93.

Nobelium is a synthetic chemical element with symbol No and atomic number 102.

Thorium is a chemical element with symbol Th and atomic number 90.

Thulium is a chemical element with symbol Tm and atomic number 69.

Ununpentium (element symbol: Uup) is a superheavy element that was first synthesized in 2003 by a joint team of Russian and American scientists at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia.

Ununtrium (symbol Uut) is a chemical element with atomic number 113.

Seaborgium is a chemical element with symbol Sg and atomic number 106.

A half-metal is any substance that acts as a conductor to electrons of one spin orientation, but as an insulator or semiconductor to those of the opposite orientation.

A metal foam is a cellular structure consisting of a solid metal (frequently aluminium) with gas-filled pores comprising a large portion of the volume.

Ununennium, also known as eka-francium or simply element 119, is the hypothetical chemical element with atomic number 119 and symbol Uue.

Telluric iron, also called native iron, is iron that originated on Earth, and is found in a metallic form rather than as an ore.

Heavy metals are generally defined as metals with relatively high densities, atomic weights, or atomic numbers.

Minor metals is a widely used term in the metal industry that generally refers to primary metals not traded on the London Metal Exchange (LME).

Metal theft is "the theft of items for the value of their constituent metals".

A light metal is any metal of relatively low density.

In metallurgy, a non-ferrous metal is a metal, including alloys, that does not contain iron (ferrite) in appreciable amounts.