Bismuth, Bi

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Bismuth, Bi
Categories:	Metal; Nonferrous Metal; Bismuth Alloy; Pure Element
Material Notes:	Characteristics: Brittle, crystalline metal Somewhat pink with a high luster Expands upon solidification, 3.32% Very low thermal conductivity Highly diamagnetic Applications: Chemical products Solders and fusible alloys Other alloying Metallurgical additive
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Physical Properties	Original Value	Comments

Density	9.80 g/cc
Vapor Pressure	0.001013 bar @Temperature 893 °C
	0.01013 bar @Temperature 1053 °C
	0.1013 bar @Temperature 1266 °C
	1.013 bar @Temperature 1564 °C
Surface Tension	363 dynes/cm @Temperature 500 °C
	370 dynes/cm @Temperature 400 °C
	376 dynes/cm @Temperature 300 °C

Chemical Properties	Original Value	Comments
Atomic Mass	208.9804	208.98038 - 1995
Atomic Number	83
Thermal Neutron Cross Section	0.032 barns/atom
X-ray Absorption Edge	0.13691 Å	K
	0.75649 Å	L_I
	0.7891 Å	L_II
	0.92459 Å	L_III
Electrode Potential	0.20 V
Electronegativity	1.9	Pauling
Ionic Radius	0.740 Å	Crystal Ionic Radius for Valence +5
	0.960 Å	Crystal Ionic Radius for Valence +3
	0.980 Å	Crystal Ionic Radius for Valence +1
Electrochemical Equivalent	2.59 g/A/h

Mechanical Properties	Original Value	Comments
Hardness, Brinell	7
Modulus of Elasticity	31.7 GPa
Poissons Ratio	0.33
Shear Modulus	11.9 GPa	Calculated

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.000105 ohm-cm @Temperature 0.000 °C
	0.000112 ohm-cm @Temperature 20.0 °C
	0.0001289 ohm-cm @Temperature 300 °C
	0.0001535 ohm-cm @Temperature 700 °C
Magnetic Susceptibility	-0.00000134	cgs/g
Critical Superconducting Temperature	2.60 - 6.17 K @Pressure 2500 - 2700 MPa	Bi II phase
	6.55 - 7.25 K @Pressure 2800 - 3800 MPa	Bi III phase
	6.00 - 8.70 K @Pressure 4300 - 6200 MPa	Bi IV phase
	6.70 - 8.30 K @Pressure 4800 - 8000 MPa	Bi V phase
	8.20 K @Pressure 3000 MPa	Bi VII(?) phase
	8.55 K @Pressure 9000 MPa	Bi VI phase

Thermal Properties	Original Value	Comments
Heat of Fusion	54.4 J/g
Heat of Vaporization	854 J/g
CTE, linear	13.3 µm/m-°C @Temperature 20.0 - 100 °C
Specific Heat Capacity	0.122 J/g-°C @Temperature 25.0 °C
	0.134 J/g-°C @Temperature 527 °C
	0.137 J/g-°C @Temperature 427 °C
	0.141 J/g-°C @Temperature 327 °C
	0.146 J/g-°C @Temperature 217.4 °C
Thermal Conductivity	10.0 W/m-K
	8.20 W/m-K @Temperature 0.000 °C
	11.3 W/m-K @Temperature 300 °C
	12.3 W/m-K @Temperature 400 °C
	13.3 W/m-K @Temperature 500 °C
	14.5 W/m-K @Temperature 600 °C
Melting Point	271.3 °C
Boiling Point	2000 °C

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.048 @Temperature 25.0 °C	unoxidized

Component Elements Properties	Original Value	Comments
Bismuth, Bi	100 %

Descriptive Properties
CAS Number	7440-69-9

References for this datasheet.

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