Chromium

Print Email

Chromium Flake

MATERIAL OVERVIEW

Characteristics: Hard brittle semi-gray metal. Compounds have strong and varied colors. Cr ion forms many coordination compounds. Exists in active and passive forms, the latter giving rise to its corrosion resistance, due to a thin surface oxide layer that passivates the metal when treated with oxidizing agents. Active form reacts readily with dilute acids to form chromous salts. Soluble in acids (except nitric) and strong alkalies; insoluble in water.

Derivation: From chromite by direct reduction (ferrochrome); by reducing the oxide with finely divided aluminum or carbon; and by electrolysis of chromium solutions.

Hazard: Hexavalent chromium (Cr VI) compounds have an irritating and corrosive effect on tissue. Exposure limits for chromium metal and Cr III compounds is 0.5 mg/m3, water-soluble CrVI compounds is 0.05 mg/m3, and insoluble Cr VI compounds is 0.01 mg/m3. Chromium VI compounds are listed as carcinogenic by NTP and IARC.

To view a photo of the item hover over the camera_nopreview icon.

GENERAL PROPERTIES

Symbol:

Cr

Atomic Number:

24

Atomic Weight:

51.996

Density:

7.18 gm/cc

Melting Point:

1857 oC

Boiling Point:

2672 oC

Thermal Conductivity:

0.939 W/cm/K @ 298.2 K

Electrical Resistivity:

12.9 microhm-cm @ 0 oC

Electronegativity:

1.6 Paulings

Specific Heat:

0.107 Cal/g/K @ 25 oC

Heat of Vaporization:

72.97 K-cal/gm atom at 2672 oC

Heat of Fusion:

3.66 Cal/gm mole

 

TYPICAL ANALYSES - Impurities in ppm

Material / Purity:

2N7

3N+

5N

Al 60 60 <1
C 100 100 6
Ca 40 - <0.5
Cu 50 50 <0.05
Fe 2400 500 <0.5
Ni 30 20 <0.5
Si 100 100 <1

CHROMIUM ROD

Material

Purity

Chromium Rod .125” 2N7
Chromium Rod .250”   camera1
2N7
Chromium Rod .500”   camera1  camera1
3N+
Chromium Rod .625” 3N+
Chromium Rod .750” 2N7
Chromium Rod 1” 3N+

Rod is cut to order and sold by the inch or foot. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom sizes.

CHROMIUM SPUTTERING TARGETS

Material

Purity

Chromium Sputtering Target  2"D X .125"T 3N+
Chromium Sputtering Target 2"D X .250"T 3N+
Chromium Sputtering Target  3"D X .125"T 3N+
Chromium Sputtering Target 3"D X .250"T 3N+
Chromium Sputtering Target 4"D X .125"T 3N+
Chromium Sputtering Target 4"D X .250"T 3N+

Targets are made to order and packaged individually. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters, thicknesses or custom sizes.

CHROMIUM POWDER, SHOT, PELLETS, INGOT, FLAKE & GRANULES

Material

Purity

Chromium Flake, Electrolytic 1” by Down  camera1
5N
Chromium Granules 2-5mm  camera1   camera1
5N
Chromium Pellets .250"D X .250"L 4N5
Chromium Powder, -50 Mesh 2N8
Chromium Powder-100 Mesh 3N, 4N
Chromium Powder-325 Mesh 3N

Powder, shot, pellets, ingot, flake & granules are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

CHROMIUM COMPOUNDS

Material

Purity

Chromium Boride CrB -325 Mesh
2N5
Chromium Boride CrB2 -325 Mesh msds1 2N5
Chromium Boride Cr5B3 -325 Mesh msds1
2N5
Chromium Carbide Cr3C2 -200+325 Mesh msds1 2N5
Chromium Oxide CrO -325 Mesh msds1 2N5
Chromium Oxide CrO2 -325 Mesh msds1 2N5
Chromium Silicide Cr3Si -150 Mesh msds1 2N5
Chromium Silicide Cr3Si2 -200 Mesh msds1 2N5
Chromium Silicide Cr3Si2 Pieces msds1 2N5
Chromium Silicide CrSi2 -325 Mesh msds1 2N5
Chromium Silicide CrSi2 Pieces msds1 2N5
Chromium Sulfide Cr2S3 -200 Mesh msds1 2N

Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

Material Safety Data Sheet - MSDS

Chromium MSDS

Chromium Powder MSDS

Technical Data Sheets

Chromium Technical Data

Understanding Mesh Sizes