Chromium(Cr) Element

Chromium is a lustrous, brittle, hard silver-gray metal. It can be highly polished. It does not tarnish in air, when heated it borns and forms the green chromic oxide. Chromium is unstable in oxygen, it immediately produces a thin oxide layer that is impermeable to oxygen and protects the metal below. Applications --- Chromium primary uses are in alloys such as stainless steel, in chrome plating and in metal ceramics. Chromium plating was once widely used to give steel a polished silvery mirror coating. Chromium is used in metallurgy to impart corrosion resistance and a shiny finish; as dyes and paints, its salts colour glass an emerald green and it is used to produce synthetic rubies; as a catalyst in dyeing and in the tanning of leather; to make molds for the firing of bricks. Chromium (IV) oxide (CrO₂) is used to manufacture magnetic tape.

Basic Infomation

Name: Chromium

Symbol: Cr

Atomic Number: 24

Atomic Mass: 51.9961 amu

Melting Point: 1857.0 °C (2130.15 °K, 3374.6 °F)

Boiling Point: 2672.0 °C (2945.15 °K, 4841.6 °F)

Number of Protons/Electrons: 24

Number of Neutrons: 28

Classification: Transition Metal

Crystal Structure: Cubic

Density @ 293 K: 7.19 g/cm3

Color: gray

Products

Name	Sign	Purity	Shape
Chromium (Cr) Evaporation Materials	Cr	99.5％,99.9％,99.95％	Irregular pieces, Granules, Flakes, Custom-Made
Chromium Metal	Cr	99.5％,99.9％,99.95％	Irregular Pieces, Granules, Powder
Chromium Sputtering Targets	Cr	99.5％,99.9％,99.95％(HIP, HP,high pure, high density)	Discs, Plate, Step,Rectangle, Sheet,Tube
Electrolytic Chromium Metal	Cr	99.95％,99.99％,99.995％	Flakes, Powder, Spicule
Chromium Oxide Granule	Cr2O3	99.9％	Granule
Chromium Oxide Powder	Cr2O3	99.9％	powder
Chromium Oxide sputtering target	Cr2O3	99.9％	Discs, Plate, Step, Rectangle, Sheet