Magnesium, Mg; Extruded

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Magnesium, Mg; Extruded
Categories:	Metal; Nonferrous Metal; Magnesium Alloy; Pure Element
Material Notes:	Extruded applies only to tensile and/or hardness values; other property values are typical of the element. This entry is for pure Mg; MatWeb has over 125 Mg alloys entries too. Magnesium alloys are very low density (1.7 g/cc) and can be treated to reasonably high strengths. Magnesium alloys are available in both wrought and cast forms. Its low density Many Mg alloys are listed in MatWeb.
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Physical Properties	Metric	English	Comments

Density	1.74 g/cc	0.0629 lb/in³
Viscosity	1.13 cP @Temperature 700 °C	1.13 cP @Temperature 1290 °F
	1.23 cP @Temperature 650 °C	1.23 cP @Temperature 1200 °F
a Lattice Constant	3.209 Å	3.209 Å
c Lattice Constant	5.211 Å	5.211 Å
Vapor Pressure	1.51987e-020 bar @Temperature 25.000 °C	1.00e-17 torr @Temperature 77.000 °F
	5.27e-14 bar @Temperature 127 °C	3.95e-11 torr @Temperature 260 °F
	0.00360 bar @Temperature 650 °C	2.70 torr @Temperature 1200 °F	solid and liquid

Chemical Properties	Metric	English	Comments
Atomic Mass	24.3050	24.3050	1995
Atomic Number	12	12
Thermal Neutron Cross Section	0.060 barns/atom	0.060 barns/atom
X-ray Absorption Edge	9.5117 Å	9.5117 Å	K
	197.39 Å	197.39 Å	L_I
	247.92 Å	247.92 Å	L_II
	247.92 Å	247.92 Å	L_III
Electrode Potential	-2.37 V	-2.37 V
Electronegativity	1.31	1.31	Pauling
Ionic Radius	0.660 Å	0.660 Å	Crystal Ionic Radius for Valence +2
	0.820 Å	0.820 Å	Crystal Ionic Radius for Valence +1
Electrochemical Equivalent	0.454 g/A/h	0.454 g/A/h

Mechanical Properties	Metric	English	Comments
Hardness, Brinell	35	35	500 kg load/10 mm ball
Tensile Strength, Ultimate	165 - 205 MPa	23900 - 29700 psi
Tensile Strength, Yield	69.0 - 105 MPa	10000 - 15200 psi
Elongation at Break	5.0 - 8.0 %	5.0 - 8.0 %
Modulus of Elasticity	44.0 GPa	6380 ksi
Compressive Yield Strength	34.0 - 55.0 MPa	4930 - 7980 psi
Poissons Ratio	0.35	0.35
Shear Modulus	16.3 GPa	2360 ksi	Calculated
Coefficient of Friction	0.36	0.36	versus magnesium at 20°C

Electrical Properties	Metric	English	Comments
Electrical Resistivity	0.00000460 ohm-cm	0.00000460 ohm-cm
Magnetic Permeability	1.00001	1.00001
Magnetic Susceptibility	5.5e-7	5.5e-7	cgs/g

Thermal Properties	Metric	English	Comments
Heat of Fusion	371.8 J/g	159.9 BTU/lb
Heat of Vaporization	4760 J/g	2050 BTU/lb
CTE, linear	26.1 µm/m-°C @Temperature 20.0 - 100 °C	14.5 µin/in-°F @Temperature 68.0 - 212 °F
	27.2 µm/m-°C @Temperature 250 °C	15.1 µin/in-°F @Temperature 482 °F
	29.6 µm/m-°C @Temperature 500 °C	16.4 µin/in-°F @Temperature 932 °F
Specific Heat Capacity	1.025 J/g-°C	0.2450 BTU/lb-°F
Thermal Conductivity	159 W/m-K	1100 BTU-in/hr-ft²-°F
Melting Point	648.3 - 649.3 °C	1199 - 1201 °F
Boiling Point	1090 °C	1990 °F

Optical Properties	Metric	English	Comments
Emissivity (0-1)	0.070 @Temperature 22.0 °C	0.070 @Temperature 71.6 °F
Reflection Coefficient, Visible (0-1)	0.74	0.74	at 1.00 micron
	0.72 - 0.77	0.72 - 0.77	at 500 nm
	0.80	0.80	at 3.0 micron
	0.93	0.93	at 9.0 micron

Component Elements Properties	Metric	English	Comments
Magnesium, Mg	100 %	100 %

Descriptive Properties
CAS Number	7439-95-4

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 view all the property values for this datasheet as they were originally entered into MatWeb.

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