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Chromium, Cr; Annealed
Categories: Metal; Nonferrous Metal; Pure Element

Material Notes: Annealed applies only to tensile and/or hardness values; other property values are typical of the element.

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Physical PropertiesOriginal ValueComments
Density 7.19 g/cc
 
Chemical PropertiesOriginal ValueComments
Atomic Mass 51.99611995
Atomic Number 24
Thermal Neutron Cross Section 2.9 barns/atom
X-ray Absorption Edge 2.07 ÅK
 18.256 ÅLI
 21.226 ÅLII
 21.5958 ÅLIII
Electrode Potential -0.560 V
Electronegativity 1.66Pauling
Ionic Radius 0.520 ÅCrystal Ionic Radius for Valence +6
 0.630 ÅCrystal Ionic Radius for Valence +3
 0.810 ÅCrystal Ionic Radius for Valence +1
 0.890 ÅCrystal Ionic Radius for Valence +2
Electrochemical Equivalent 0.971 g/A/h
 
Mechanical PropertiesOriginal ValueComments
Hardness, Brinell 80Converted from Vickers for 500 kg load/10 mm ball Brinell test.
Hardness, Knoop 102Converted from Vickers
Hardness, Rockwell B 48Converted from Vickers
Hardness, Vickers 90
Charpy Impact, Unnotched 2.00 JUnspecified Heat Treatment.
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 5.00e-7 ohm-cm
@Temperature -260 °C
 0.0000130 ohm-cm
@Temperature 20.0 °C
 0.0000180 ohm-cm
@Temperature 152 °C
 0.0000200 ohm-cm
@Temperature 200 °C
 0.0000310 ohm-cm
@Temperature 407 °C
 0.0000400 ohm-cm
@Temperature 600 °C
 0.0000470 ohm-cm
@Temperature 652 °C
 0.0000660 ohm-cm
@Temperature 1000 °C
Magnetic Susceptibility 0.0000035cgs/g
 
Thermal PropertiesOriginal ValueComments
Heat of Fusion 293.1 J/g
Heat of Vaporization 5945 J/g
CTE, linear 6.20 µm/m-°C
@Temperature 20.0 - 100 °C
Specific Heat Capacity 0.461 J/g-°C
Thermal Conductivity 69.1 W/m-K
Melting Point 1860 °C
Boiling Point 2671 °C
 
Optical PropertiesOriginal ValueComments
Emissivity (0-1) 0.10
@Temperature 50.0 °C
polished, total radiation
Reflection Coefficient, Visible (0-1) 0.70500 nm
 
Component Elements PropertiesOriginal ValueComments
Chromium, Cr 100 %
 
Descriptive Properties
CAS Number7440-47-3

References for this datasheet.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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AMECr02 / 26

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