Chromium Metal Cr CAS 7440-47-3 For Optical Coating Materials

Chromium powder, also known as ferrochrome ore powder, is an important inorganic compound, mainly composed of Cr2O3. It has high heat resistance, excellent chemical stability and thermal shock resistance, is widely applied in many fields.

In the field of metallurgy, chromium powder is a key raw material for the production of high-performance steels such as stainless steel and alloy steel, which can significantly improve the hardness, wear resistance and corrosion resistance of steel. In the field of chemical industry, chromium powder as catalyst and mordant plays an important role in organic synthesis and petrochemical industry. In addition, it is a raw material for the manufacture of pigments and dyes, especially in the ceramic and glass industries, as a colorant, giving products their distinctive green and other colors.

Chromium powder is also widely used in the field of building materials, as an additive to cement and refractory materials, to enhance the compressive, tensile and impact resistance of materials. In the casting industry, chromium powder is used in sand casting to improve the fire resistance and chemical erosion resistance of the sand mold and ensure the quality of the casting.

product details

products features

Name: Chromium Metal, Chromium powder

Molecular formula: Cr

CAS: 7440-47-3

Molecular weight: 52

Description

Chromium is a silvery white lustrous metal. Pure chromium has ductility. Chromium containing impurities is hard and brittle, and soluble in strong alkali solution. Chromium has a high corrosion resistance, and oxidation is slow in the air, even in the state of red heat. Insoluble in water. Plated on metal for protection. Ferrochrome and silicochromium, widely used in iron and steel industry, are smelted in electric furnace. In the production of chromium, the methods of thermite reduction and electrolysis are used. Aluminothermic production includes two processes: the production of chromium oxide from chromite and the production of metal chromium from aluminum reduction chromium oxide. Generally, carbon ferrochrome is used as raw material in electrolytic production, and chrome ammonium alum method is used for electrolysis.

Specification

Name		Cr_3N5	Cr_2N5	Cr_2N
Molecular formula		Cr	Cr	Cr
CAS		7440-47-3	7440-47-3	7440-47-3
Fe	%	≤0.01	≤0,15	≤0,30
Al	%	≤0.01	≤0,10	≤0.30
Si	%	≤0.005	≤0.10	≤0.25
C	%	≤0.01	≤0.01	≤0.01
S	%	≤0.005	≤0.01	≤0.01
P	%	≤0.003	≤0.005	≤0.005
N	%	≤0.003	≤0.02	≤0.03
O	%	≤0.02	≤0.2	≤0.5
Pb	%	≤0.0005	≤0.0005	≤0.0005
Cu	%	≤0.0005	≤0.003	≤0.005
property		Silver-gray piece or powder
Application Area		High purity metal chromium is used to make optical coating materials and chromium targets. Chromium is mainly used to produce stainless steel and various alloy steels in the form of ferrochromium.
package		Sealed packaging, flexible packaging according to customer needs

Packing: topical 25kg / bag or 50kg / bag Vacuum packaging, also provided small package: 100g, 200g, 500g, vacuum small package.

Used

High purity metal chromium is used to make optical coating materials and chromium targets. Chromium is mainly used to produce stainless steel and various alloy steels in the form of ferrochromium. Chromium is used as additive of aluminum alloy, cobalt alloy, titanium alloy, high temperature alloy and resistance heating alloy. Chrome plating and chromizing can make steel, copper, aluminum and other metals form a corrosion-resistant surface layer, which is bright and beautiful, and widely used in furniture, automobile, construction and other industries. In addition, chromite is also widely used to make refractories.