• 0
  • 0

High Purity Chromium Cr Powder CAS 7440-47-3, 99%

If you are looking for high-quality products, please feel free to contact us and send an inquiry, email: brad@ihpa.net

Chromium powder is a silvery-white metal with a slightly dark gray color (body-centered cubic crystal system).
Particle size: 53-125um(FSSS)

About Chromium Cr Powder:
Chromium is a steel-gray, lustrous, and hard metal that finds wide use as a catalyst or in alloys. 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 the air, even in extreme moisture.

What is chromium powder?
Chromium powder is a silvery-white metal with a slightly dark gray color (body-centered cubic crystal system). Chromium melting point is 1857℃. Chromium boiling point is 2672 ℃.
Chromium density D28 7.20. Soluble in dilute sulfuric acid, dilute hydrochloric acid, insoluble in water, nitric acid, aqua regia. Chromium, the chemical symbol Cr, has an atomic number of 24 and belongs to the ⅥB group in the periodic table. The element name comes from the Greek word meaning "color," because chromium compounds have colors. The single material is steel-gray metal, which is the hardest metal in nature. The content of chromium in the earth's crust is 0.01%, ranking the 17th. Free natural chromium is extremely rare and mainly exists in chrome-lead ore. Metal chromium powder can burn under high temperatures and open flame. It has almost no harmful effect on the human body and has not been reported to cause industrial poisoning. But hexavalent chromium ions are carcinogenic. Packing and storage of products in iron drums lined with polyethylene plastic bags should be stored in dry and clean warehouses. Not to be stored and transported together with acids. Fire can be used dry powder, sand to extinguish.

Robocup2009 is a trusted global Chromium metal powder supplier. Feel free to send an inquiry about the latest Chromium powder price at any time.

Product Information of chromium powder CAS 7440-47-3:

chromium powder Purity: 99.95% 
Copper powder Appearance: grey nanopowder
Copper powder FSSS: 53 to 125 microns
Copper powder Bulk density: 3.8 g/cm3
chromium powder COA:


Chemical Composition,ppm










































How is Chromium Cr Powder produced?
In the production of chromium, the calcination process of chromite calcium is used to convert chromium trioxide into sodium chromate, which is leached into sodium chromate solution with dilute solution and water, and then manufactured by electrolysis method.
Electrolysis method: when sodium chromate is used as compensation solution for electrolysis, the cathode solution is 40g/L(Cr), 90g/L (NH4);Anodic solution is 22g/L (Cr), 18g/L (NH4), 200g/ LH2S04.Chromium metal was prepared by electrolysis of stainless steel for cathode and Pb-Ag alloy for anode at the temperature of about 60℃, cell voltage of 4.8V and current density of 8.6A/CrR12. Due to the high content of silicon, aluminum and other impurities in chromite and its additive, the amount of slag discharged in the process is large, because the slag contains toxic water-soluble Cr6+, which seriously pollutes the environment.
The process developed in recent years: the chromite is first reduced by carbon into carbon ferrochrome, and then oxidized by roasting and leaching with soda ash, dolomite and other mixtures to obtain sodium chromate solution, which is reduced by sulfur and calcined to obtain chromium oxide, and then smelted, sandblasted and finished with aluminum to obtain metal chromium products. The advantage of this method is that most of the impurities in chromite enter the smelting slag, so the total chromium in the mixture can be higher, and the pollution to the environment can be reduced, and the soda ash consumed in the roasting process is less, and the quality of the products can be improved at the same time.
Applications of Chromium Cr Powder:
Chromium uses are very wide. Chromium powder can be used as light-resistant, the heat-resistant coating also can be used as abrasives, glass, ceramic colorant, chemical synthesis of catalyst. Chromium alum and dichromate are used as tanning materials for leather, mordant, impregnating agent and various pigments for fabric dyeing. Chromium plating and chromizing can make steel, copper, aluminum and other metals form a corrosion-resistant surface, and bright and beautiful, widely used in furniture, automobile, construction and other industries. In addition, chrome ore is also used in large quantities to make refractory materials. Used for refining high-temperature alloy, resistance alloy, precision alloy as additive of chromium element. Pure chromium is used for electroplating.

Storage Condition of chromium Cr powder:
The damp reunion will affect chromium Cr powder dispersion performance and using effects, therefore, chromium Cr powder should be sealed in vacuum packing and stored in cool and dry room, the chromium Cr powder can not be exposure to air. In addition, the Cr powder should be avoided under stress.

Packing & Shipping of chromium Cr powder:
We have many different kinds of packing which depend on the chromium Cr powder quantity.
Chromium Cr powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Chromium Cr powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.

Robocup2009 advanced material Nano Technology Co. Ltd. (Robocup2009) is a trusted global chemical material supplier & manufacturer with over 12-year-experience in providing super high-quality chemicals and Nanomaterials, including boride powder, nitride powder, graphite powder, sulfide powder, 3D printing powder, etc.
If you are looking for high-quality chromium powder, please feel free to contact us and send an inquiry. (brad@ihpa.net)

Chromium Powder Properties

Other Names Chromium Chips, Chromium Sheet, Chromium Flake
CAS No. 7440-47-3
Compound Formula Cr
Molecular Weight 52
Appearance Silvery
Melting Point 1857
Boiling Point 2672
Density 7.18 g/cm3
Solubility in H2O N/A
Electrical Resistivity 12.96 microhm-cm @ 0 °C
Poisson's Ratio 0.21
Tensile Strength N/A
Thermal Conductivity 0.939 W/cm/K @ 298.2 K
Thermal Expansion (25 °C) 4.9 µm·m-1·K-1
Vickers Hardness 1060 MN m-2
Young's Modulus 279 Gpa

Chromium Powder Health & Safety Information

Signal Word Warning
Hazard Statements H400
Hazard Codes N/A
Risk Codes N/A
Safety Statements N/A
Transport Information N/A

Inquiry us

High Purity 3D Printing Nickel Alloy IN718 Powder

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Metal Alloy 18g/cm3 High Density Tungsten Alloy Ball

Metal Alloy 18.5g/cm3 Polished Tungsten Heavy Alloy Plate

High Purity Molybdenum Boride MoB2 Powder CAS 12006-99-4, 99%

High Purity Antimony Sulfide Sb2S3 Powder CAS 1314-87-0, 99.99%

High Purity Nano Hafnium Hf powder CAS 7440-58-6, 99%

Metal Alloy High Density Tungsten Alloy Rod Grind Surface Tungsten Alloy Bar

High Purity Chromium Diboride CrB2 Powder CAS 12007-16-8, 99%

High Purity Vanadium Boride VB2 Powder CAS 12007-37-3, 99%

High Purity Tungsten Silicide WSi2 Powder CAS 12039-88-2, 99%

High Purity Calcium Nitride Ca3N2 Powder CAS 12013-82-0, 99.5%

High Purity 3D Printing Nickel-based Alloy IN738 Powder

High Purity Titanium Sulfide TiS2 Powder CAS 2039-13-3, 99.99%

High Purity 3D Printing Powder 15-5 Stainless Steel Powder

High Purity Nano Ag Silver powder cas 7440-22-4, 99%

High Purity Zirconium Nitride ZrN Powder CAS 25658-42-8, 99.5%

High Purity Titanium Nitride TiN Powder CAS 25583-20-4, 99.5%

Supply Magnesium Granules Mg Granules 99.95%

Our Latest Products

High Purity 3D Printing Nickel Alloy IN718 Powder

In718 Powder is widely used for industrial and aviation turbo-propellers, petrochemical, nuclear reactors, and other fields.Particle Size: 15-45mm; 15-53mm; 53-120mm and 53-150mm 3D Printing Nickel Alloy Inconel 718 Properties: Nickel Alloy IN71…

Metal Alloy 8.92g/Cm3 High Purity Polished Copper Plate

Copper products exhibit good electrical conductivity as well as thermal conductivity. They are also ductile, resistant to corrosion, and have high wear resistance. They are widely used by the electricity, electronics and energy industries. Metal Al…

High Purity Germanium Sulfide GeS2 Powder CAS 12025-34-2, 99.99%

Germanium Sulfide (GeS2) is a semiconductor compound with the chemical Formula GeS2. It has a high solubility level in water. It's also easily soluble when heated alkali is used.Particle size : 100mesh Purity: 99.99% About Germanium Sulfide (GeS2)…