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Refractory Metals

Tantalum, Ta; Sintered, Cast (UNS R05210)
Categories: Metal; Nonferrous Metal; Refractory Metal; Pure Element
Material Notes: Sintered unalloyed

Characteristics: high corrosion resistance, fine microstructure, excellent cold ductility, excellent formability and weldability
Key Words: UNS R05210
Vendors: Eagle Alloys Corporation is a leading supplier of quality metals and alloys. Our staff prides itself on working fast, efficiently and courteously to get you the information you need. Call (800) 237-9012 or visit www.EagleAlloys.com.

PLANSEE SE: Whether it's high temperatures, aggressive chemicals or extreme mechanical loading: PLANSEE supplies a suitable product solution in refractory metals or composite materials. As the world market leader in powder metallurgically produced high performance materials we combine outstanding materials knowledge with profound applications and technology know-how. Visit us at www.plansee.com.

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Physical PropertiesMetricEnglishComments
Density 16.656 g/cc0.60174 lb/in³
a Lattice Constant 3.303 Å3.303 Åbody-centered cubic
Vapor Pressure  5.00e-13 bar
@Temperature 1800 °C		3.75e-10 torr
@Temperature 3270 °F
 7.00e-10 bar
@Temperature 2200 °C		5.25e-7 torr
@Temperature 3990 °F
 
Chemical PropertiesMetricEnglishComments
Atomic Mass 180.95180.95
Atomic Number 7373
Atomic Volume 1.8e-0291.8e-029m^3
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 120120
Tensile Strength, Ultimate 310 MPa45000 psi
Tensile Strength, Yield 220 MPa
@Strain 0.2 %		31900 psi
@Strain 0.2 %
Elongation at Break 30 %30 %
Modulus of Elasticity 185 GPa26800 ksi
 150 GPa
@Temperature 1200 °C		21800 ksi
@Temperature 2190 °F
 155 GPa
@Temperature 800 °C		22500 ksi
@Temperature 1470 °F
 165 GPa
@Temperature 400 °C		23900 ksi
@Temperature 752 °F
Poissons Ratio 0.350.35
Shear Modulus 68.5 GPa9940 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000125 ohm-cm0.0000125 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.50 µm/m-°C3.61 µin/in-°F
 6.70 µm/m-°C
@Temperature 200 °C		3.72 µin/in-°F
@Temperature 392 °F
 6.90 µm/m-°C
@Temperature 600 °C		3.83 µin/in-°F
@Temperature 1110 °F
 7.10 µm/m-°C
@Temperature 1000 °C		3.94 µin/in-°F
@Temperature 1830 °F
Specific Heat Capacity 0.139 J/g-°C0.0332 BTU/lb-°F
 0.140 J/g-°C
@Temperature 400 °C		0.0335 BTU/lb-°F
@Temperature 752 °F
 0.150 J/g-°C
@Temperature 800 °C		0.0359 BTU/lb-°F
@Temperature 1470 °F
 0.170 J/g-°C
@Temperature 1200 °C		0.0406 BTU/lb-°F
@Temperature 2190 °F
Thermal Conductivity 57.55 W/m-K399.4 BTU-in/hr-ft²-°F
 53.0 W/m-K
@Temperature 200 °C		368 BTU-in/hr-ft²-°F
@Temperature 392 °F
 55.0 W/m-K
@Temperature 400 °C		382 BTU-in/hr-ft²-°F
@Temperature 752 °F
 57.0 W/m-K
@Temperature 600 °C		396 BTU-in/hr-ft²-°F
@Temperature 1110 °F
Melting Point 2996 °C5425 °F
Boiling Point 5460 °C9850 °F
 
Processing PropertiesMetricEnglishComments
Recrystallization Temperature 900 - 1450 °C1650 - 2640 °FAnnealing time: 1 hour
 
Component Elements PropertiesMetricEnglishComments
Tantalum, Ta 100 %100 %impurities not specified

References for this datasheet.

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