A comparatively rare element occurring most abundantly in the mineral chromite. Atomic weight 52.5. Symbol Cr. When isolated it is a hard, brittle, grayish white metal, fusible with difficulty. Its chief commercial importance is for its compounds, as potassium chromate, lead chromate, etc., which are brilliantly colored and are used dyeing and calico printing. Called also chrome.
Compare?(See: heavy metals.)
Chromium (Cr) is a steel-gray, lustrous, hard, metallic element, and takes a high polish. The addition of a minimum of 12% chromium to steel makes stainless steel resist rust, or "stain-less" than other types of steel. The chromium in the steel combines with oxygen in the atmosphere to form a thin, invisible layer of chrome-containing oxide, called the "passive film." The film self-repairs in the presence of oxygen if the steel is damaged mechanically or chemically, and thus prevents corrosion from occurring.
An alloying element that is the essential stainless steel raw material for confeffing corrosion resistance. A film that naturally forms on the surface of stainless steel self-repairs in the presence of oxygen if the steel is damaged mechanically or chemically and thus prevents corrosion from occurring.
A heavy metal that occurs naturally in rocks, plants, soil, and volcanic dust and gases. It is tasteless and odorless. It can damage living things at low concentrations and tends to accumulate in the food chain.
A blue-white metallic element found naturally only in combination and used especially in steel alloys and in electroplating. See also molybdenum, manganese, chromium, silicon and nickel
A hard, brittle, semi-gray metal. Uses includes alloys and plating element on metal and plastic substrates for corrosion resistance. Protective coating for automotive and equipment accessories. Hazard: Chromium compounds are suspected of producing tumors of the lungs, and nasal cavity. Corrosive action on the skin and mucous membranes. If exposure continues, perforation of the nasal septum may result.
CAS Number: 16065-83-1. A steel-gray solid with a high melting point. It is used in the production of steel and other metal alloys. It is a naturally occurring element in rocks, soils, animals and plants. Chemical formula = Cr. Molecular weight = 51.996 g/mol. Learn More...
When used as an alloying element, chromium increases the hardenability of steel and in association with high carbon gives resistance to wear and abrasion. Chromium has an important effect on corrosion resistance and is present in stainless steels in amounts of 12% to 20%. It is also used in heat-resisting steels and high duty cast irons.
Produces hardness and better edge holding when combined with other alloying materials. Aids rust resistance also.
Added to increase the hardenability of steel. A strong carbide former, so is present in quenched and tempered engineering steels, up to 3.5%, ball bearing steel, 1-1.5%, tool steels, (up to 12% in cold-working die steel) and in creep and heat resisting steels. When steels contain 11% or more of chromium they are termed stainless because of their corrosion resistance which is due to the thin passive chromium-rich oxide film which forms on the steel surface.
hard grayish white metallic element. Often used for plating in costume jewelry. Also known as chrome.
Chromium is used in low alloy steels to increase 1) resistance to corrosion and oxidation, 2) high temperature strength, 3) hardenability, and 4) abrasion resistance in high carbon alloys. Straight chromium steels are susceptible to temper embrittlement and can be brittle.
A heavy metal that is used in many building products including tapware, stainless steel, leather tanning and timber CCA preservatives. IARC lists it in Group 3 ( not classifiable as to its carcinogenicity to humans). Chromium is one of a group of chemicals that cannot be added during manufacture if furniture is to be awarded a Good Environmental Choice Australia Ecolabel.
a hard brittle blue-white multivalent metallic element; resistant to corrosion and tarnishing
A hard, grayish white and corrosion resistant metal widely used as an alloying element in steel and for plating steel products.
hard white metal used in stainless steel and other alloys
Increases the steel's hardenability, corrosion resistance, and provides wear and abrasion resistance in the presence of carbon. It is largely present in stainless steels, usually ranging from 12 to 20%.
a metallic agent used in glass to produce a yellowish–green color.
A metaloid element. Toxic when orally ingested and potentially carcinogenic (cancer-causing). Now commonplace in soils and groundwater.
A hard white metallic element that occurs as chromo-iron ore and is toxic to plants and animals.
A heavy metal that is an important hazardous air pollutant. (See "heavy metals.")
An element added to stainless steel, resulting in a corrosion resistant alloy.
A lustrous, hard, steel-gray metallic element, resistant to tarnish and corrosion, used in the hardening of alloys and in electro-plating.
(See: heavy metals.)
A hard, steel-gray metallic alloying element that is resistant to tarnish and corrosion. It is used in the hardening of steel alloys and the production of stainless steels.
A metallic element added to steel to improve mechanical properties and increase resistance to oxidation, corrosion and wear. A minimum of 12% chromium is required to produce stainless steel.
A naturally occurring element found in air, soil, water and food.
is an important metal and has a wide range of industrial uses CMMI Counsel for Mining and Metallurgical Institutions.
Chromium is the 24th element on the periodic table, and it is the main ingredient in stainless steel. In fact, the reason that stainless steel is so resilient to rust, corrosion and tarnish is because of the high chromium content, at least 10.5%.
A major element in martensitic stainless steel that improves hardenability, wear resistance and corrosion resistance.
An alloying element that is used in stainless steel to deter corrosion.
The shiny mirror-like finish on countless twentieth century pieces is often chromium. It was very popular during the twenties as a protective coating for objects as diverse as table lamps, ashtrays, and jewelry. It is applied to other metals through a method similar to electro-plating.
master alloy element for several titanium alloys. Chromium is used to stabilize beta microstructures. Typical alloying weight percentages are from 2 to 12%.
a lustrous, hard, steel gray metallic element used in steel alloys and stainless steel.
Chromium is a metallic, non-toxic element, with period table symbol Cr. Chromium does not have any function in the human body.
atomic symbol, Cr, chromium is the 24th element in the periodic table (atomic number 24) with an atomic weight of 52.00. A group VI metal, chromium has seen some use as a barrier metal in backside metal and under solder bumps. IBM in particular has made a large number of solder bumps with chromium barrier metal.
a toxic heavy metal that may contaminate groundwater; stringent environmental discharge limits apply
Chromium is a hard, shiny, gray-white metal. This metal resists corrosion very well and is used in costume jewelry as a coating over other metals.
Chromium (IPA: ) is a chemical element in the periodic table that has the symbol Cr and atomic number 24.
