COR-TEN steel, sometimes written as "Corten steel," is the registered trademark of a group of weathering steel alloys, all of which feature an outer layer that naturally rusts and protects the core from corrosion. The metal does not need painting, and forms a uniform rust-like appearance when exposed to the elements.Know More
COR-TEN steel has increased resistance to corrosion as compared to other steels. It forms an oxidized top layer characterized by its dark brown color that prevents rust from penetrating to the base metal. The steel saves users money on rust prevention and maintenance as these services are not needed.
As of 2014, U.S. Steel provides three types of weathering steel, designated A 242, A 588 and A 606-4 by the ASTM International standards group. Type A 242, or COR-TEN A, is the original alloy, and type A 588, or COR-TEN B, is a newer one. Type A 606-4 is thin sheet.
The manufacturer provides all alloys in a rust-free form and they begin to rust naturally after installation upon exposure to the elements. Since the alloys require climates with alternating wet and dry periods to form a proper protective layer, they are not suitable for use in marine areas, or places with high humidity, constant fog or long periods of rain.Learn more about Precious Metals & Gems
Steel is flame-hardened in the same way as many other ferrous metals—a process also known as "induction hardening," in which a metal is heated by a powerful flame and then "quenched," or rapidly cooled. The rapid cooling of the heated metal results in a final product that is harder and more brittle than the original metal.Full Answer >
Stainless steel does not tarnish. It does not oxidize as well. Stainless steel has become more popular in body jewelry due to its hypo-allergenic finish and non-reactive surface.Full Answer >
Uranium belongs to the group Actinides. This group is one of the families that are called rare earth metals. All of the elements in this group need special handling due to being either unstable or radioactive.Full Answer >
Modern stainless steel contains nickel along with other elements, such as molybdenum, niobium and chromium, that help the metal resist corrosion. Nickel is merely one of the key elements that adds to the rust-resistance of steel.Full Answer >