Rhenium, Re; Annealed

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Rhenium, Re; Annealed
Categories:	Metal; Nonferrous Metal; Refractory Metal; Pure Element
Material Notes:	Annealed applies only to tensile and/or hardness values; other property values are typical of the element. Stress relieving temperature 900-1200°C. Recrystallization temperature, 1 hour, is 1400-1600°C.
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Physical Properties	Original Value	Comments

Density	21.03 g/cc
Vapor Pressure	1.00e-14 bar @Temperature 1525 °C
	4.00e-11 bar @Temperature 2000 °C
	1.10e-9 bar @Temperature 2200 °C
	1.90e-8 bar @Temperature 2400 °C
	1.60e-7 bar @Temperature 2600 °C
	0.00000170 bar @Temperature 2800 °C
	0.0000110 bar @Temperature 3000 °C

Chemical Properties	Original Value	Comments
Atomic Mass	186.207	1995
Atomic Number	75
Thermal Neutron Cross Section	86 barns/atom
X-ray Absorption Edge	0.17311 Å	K
	0.99009 Å	L_I
	1.03645 Å	L_II
	1.1772 Å	L_III
Electronegativity	1.9	Pauling
Ionic Radius	0.560 Å	Crystal Ionic Radius for Valence +7
	0.720 Å	Crystal Ionic Radius for Valence +4

Mechanical Properties	Original Value	Comments
Hardness, Brinell	165	Converted from Vickers for 3000 kg load/10 mm ball Brinell test.
Hardness, Rockwell A	52	Converted from Vickers.
Hardness, Rockwell B	85	Converted from Vickers.
Hardness, Vickers	170
Tensile Strength, Ultimate	1070 MPa
	410 MPa @Temperature 1200 °C
	620 MPa @Temperature 800 °C
Tensile Strength, Yield	290 MPa
Elongation at Break	15 - 25 %
Modulus of Elasticity	469 GPa
Poissons Ratio	0.296
Shear Modulus	176 GPa

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.0000193 ohm-cm @Temperature 20.0 °C
	0.0000254 ohm-cm @Temperature 100 °C
	0.0000400 ohm-cm @Temperature 300 °C
	0.0000526 ohm-cm @Temperature 500 °C
	0.0000630 ohm-cm @Temperature 700 °C
	0.0000725 ohm-cm @Temperature 900 °C
	0.0000805 ohm-cm @Temperature 1100 °C
	0.0000870 ohm-cm @Temperature 1300 °C
	0.0000930 ohm-cm @Temperature 1500 °C
	0.0000985 ohm-cm @Temperature 1700 °C
	0.000103 ohm-cm @Temperature 1900 °C
	0.0001065 ohm-cm @Temperature 2100 °C
	0.000109 ohm-cm @Temperature 2300 °C
Magnetic Susceptibility	3.63e-7	cgs/g
Critical Magnetic Field Strength, Oersted	195 - 205
Critical Superconducting Temperature	1.691 - 1.703 K	2.3 K max for Re II

Thermal Properties	Original Value	Comments
Heat of Fusion	178 J/g
CTE, linear	6.12 µm/m-°C @Temperature 500 °C
	6.20 µm/m-°C @Temperature 20.0 °C
	6.20 µm/m-°C @Temperature 250 °C
	6.65 µm/m-°C @Temperature 1000 °C
Specific Heat Capacity	0.134 J/g-°C @Temperature 500 °C
	0.138 J/g-°C @Temperature 25.0 °C
	0.150 J/g-°C @Temperature 1000 °C
	0.161 J/g-°C @Temperature 1000 °C
	0.177 J/g-°C @Temperature 1500 °C
	0.199 J/g-°C @Temperature 2000 °C
Thermal Conductivity	39.6 W/m-K
Melting Point	3180 °C
Boiling Point	5596 °C
Maximum Service Temperature, Inert	2380 °C	vaporization<1% after 10 hours

Optical Properties	Original Value	Comments
Emissivity (0-1)	0.42 @Temperature 0.000 - 2000 °C, Wavelength 655 nm

Component Elements Properties	Original Value	Comments
Rhenium, Re	100 %

Descriptive Properties
CAS Number	7440-15-5

References for this datasheet.

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