Chromium (Cr) Powder & Chromium Flake

Physical Properties

Powder, flake, granules, shot, pieces, chips, cubes, single crystals, and targets.

Chromium powder is available in fine sizes raning from Plasma S.G., or -140 mesh to -325 mesh. 

Chromium flake is available 30 mm x 15 mm.

Other sizes available upon request. 

Chemical Properties of Chromium Powder & Chromium Flake

99%, 99.2%, 99.5%, 99.95%, 99.99%, 99.998%

Typical Applications for Chromium

Pigments, dyes, corrosion/oxidation resistant plating and coating (for critical equipment), H.I.P., refractory products, superalloys, stainless steel, electronics, sputtering source, magnetic storing materials, batteries, catalysts, welding alloys, and thin film for electronics.

Chromium metal quickly became an indispensable ingredient in various industrial materials because of its unique characteristics. Examples of these applications include stainless steel, super alloys, aluminum alloys, and electronics. High grade stainless steels, made possible by additions of chromium metal, are essential to the safe and environmentally sound operation of chemical plants, nuclear power generation facilities, food processing operations, and other critical industries. Chromium metal is also a fundamental ingredient in various types of super alloys which are essential to the aerospace and nuclear power industries. Recently, chromium metal ion plating has become an environmentally sound alternative to traditional chromium plating methods.

Description of Chromium

Chromium is a steel-gray, lustrous, and hard metal that finds wide use as a catalyst or in alloys. All chromium compounds have intense and varied colors.

Chromium is used as a hardener in steel, for the manufacture of stainless steel and many useful alloys. It is also employed to give glass an emerald green color. Chromium does not oxidize in air, even in extreme moisture.

Chemical Name: Chromium

Chemical Formula: Cr

Packaging for Cr Orders

Drums

Synonyms for this Chemical

chromium metal powder, chromium metal flake, chromium metal granule, chromium metal shot, chromium metal pieces, chromium metal chips, Cr, chromium metal cubes, chromium metal pieces, chromium metal single crystal, chromium metal sputtering target, CAS# 7440-47-3

Classification

Chromium Metal Powder TSCA (SARA Title III) Status: CDC Listing. For further information please call the E.P.A. at +1-202.554.1404

Chromium Metal Powder Chemical Abstract Service Number: CAS# 7440-47-3

Chromium Metal Powder UN #: 3089

Chromium (Cr) Metal Safety & Health Precautions:

• Water insoluble chromium(III) compounds and chromium metal are not considered a health hazard, while the toxicity and carcinogenic properties of chromium(VI) are known for a long time. An actual investigation into hexavalent chromium release into drinking water was used as the plot-basis of the motion picture Erin Brockovich.
• Because of the specific transport mechanisms, only limited amounts of chromium(III) enter the cells. Several in vitro studies indicated that high concentrations of chromium(III) in the cell can lead to DNA damage. Acute oral toxicity ranges between 1500 and 3300 µg/kg. The proposed beneficial effects of chromium(III) and the use as dietary supplements yielded some controversial results, but recent reviews suggest that moderate uptake of chromium(III) through dietary supplements poses no risk.
• World Health Organization recommended maximum allowable concentration in drinking water for chromium (VI) is 0.05 milligrams per liter. Hexavalent chromium is also one of the substances whose use is restricted by the European Restriction of Hazardous Substances Directive.
• The acute oral toxicity for chromium(VI) ranges between 50 and 150 µg/kg. In the body, chromium(VI) is reduced by several mechanisms to chromium(III) already in the blood before it enters the cells. The chromium(III) is excreted from the body, whereas the chromate ion is transferred into the cell by a transport mechanism, by which also sulfate and phosphate ions enter the cell. The acute toxicity of chromium(VI) is due to its strong oxidational properties. After it reaches the blood stream, it damages the kidneys, the liver and blood cells through oxidation reactions. Hemolysis, renal and liver failure are the results of these damages. Aggressive dialysis can improve the situation.
• The carcinogenity of chromate dust is known for a long time, and in 1890 the first publication described the elevated cancer risk of workers in a chromate dye company. Three mechanisms have been proposed to describe the genotoxicity of chromium(VI). The first mechanism includes highly reactive hydroxyl radicals and other reactive radicals which are by products of the reduction of chromium(VI) to chromium(III). The second process includes the direct binding of chromium(V), produced by reduction in the cell, and chromium(IV) compounds to the DNA. The last mechanism attributed the genotoxicity to the binding to the DNA of the end product of the chromium(III) reduction. Source: Wikipedia
• The electronics industry deserves special note wherein chromium metal demonstrates outstanding properties as a thin film material. Chromium metal has become indispensable in the production of computer hard disks (both as an underlayer and as a constituent of the magnetic memory media), photo masks, integrated circuits, and liquid crystal displays.
• These new and evolving applications have lead to strict and diverse quality requirements for chromium metal. Also, since chromium metal is one of the most difficult materials to refine, the properties and uses of high purity chromium metal have not been fully explored. High purity chromium metal has a great potential for previously undiscovered applications. Recently, a research program to develop the "ultimate super alloy" using high purity chromium metal was initiated.