H.C. Starck NRC® Tantalum (UNS R05200)

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H.C. Starck NRC® Tantalum (UNS R05200)
Categories:	Metal; Nonferrous Metal; Refractory Metal; Pure Element
Material Notes:	Applications: High strength and excellent corrosion resistance make tantalum ideal for use in the manufacture and repair of chemical process equipment and heat exchangers. Other uses are rupture discs, cathode plates, heat shielding, ordnance, sputtering and medical applications. Forms Available: Foil, Sheet, Plate, Welded Tubing, Rod, Wire and Bar. Metallurgical Characteristics: Material is single-phase tantalum. Stress relieve at 1500°F, re-crystallize at 1900°F. Information provided by H.C. Starck.
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. Click here to view all available suppliers for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
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Physical Properties	Original Value	Comments

Specific Gravity	16.6 g/cc

Chemical Properties	Original Value	Comments
Atomic Mass	180.95
Atomic Number	73
Thermal Neutron Cross Section	21.3 barns/atom

Mechanical Properties	Original Value	Comments
Hardness, Rockwell B	25 - 65	hardness as annealed, typical
Hardness, Vickers	80 - 120	hardness as annealed, typical
Tensile Strength	>= 23.2 ksi @Temperature 249 °C
	>= 25.4 ksi @Temperature 199 °C
	>= 29.0 ksi @Temperature 98.9 °C
	>= 30.0 ksi @Temperature 21.1 °C
Tensile Strength, Ultimate	35.0 - 45.0 ksi @Temperature 20.0 °C	typical
Tensile Strength, Yield	20.0 - 30.0 ksi @Temperature 20.0 °C	typical
	>= 10.1 ksi @Strain 0.2 %, Temperature 249 °C
	>= 11.6 ksi @Strain 0.2 %, Temperature 199 °C
	>= 14.5 ksi @Strain 0.2 %, Temperature 98.9 °C
	>= 20.0 ksi @Strain 0.2 %, Temperature 21.1 °C
Elongation at Break	>= 10 % @Temperature 199 °C
	>= 15 % @Temperature 98.9 °C
	>= 20 % @Temperature 21.1 °C
Modulus of Elasticity	27000 ksi

Electrical Properties	Original Value	Comments
Volume Resistivity	0.0000147 ohm-cm @Temperature 0.000 - 100 °C

Thermal Properties	Original Value	Comments
CTE, linear	3.60 µin/in-°F @Temperature 20.0 - 500 °C
Specific Heat Capacity	0.0336 BTU/lb-°F @Temperature 100 °C
Thermal Conductivity	384 BTU-in/hr-ft²-°F @Temperature 20.0 - 100 °C
Melting Point	3017 °C

Component Elements Properties	Original Value	Comments
Carbon, C	<= 0.0050 %
Hydrogen, H	<= 0.0010 %
Iron, Fe	<= 0.0050 %
Molybdenum, Mo	<= 0.020 %
Nickel, Ni	<= 0.0050 %
Niobium, Nb (Columbium, Cb)	<= 0.030 %
Nitrogen, N	<= 0.0050 %
Oxygen, O	<= 0.010 %
Silicon, Si	<= 0.0010 %
Tantalum, Ta	>= 99.884 %	balance
Titanium, Ti	<= 0.0040 %
Tungsten, W	<= 0.030 %

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NHCST930 / 130820

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