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

Category Metal , Nonferrous Metal , Refractory Metal , Pure Element
Manufacturer H.C. Starck
Trade Name NRC®
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF H.C. Starck NRC® Tantalum (UNS R05200).pdf
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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.
Physical Properties Metric English Comments
Specific Gravity 16.6 g/cc
16.6 g/cc
Mechanical Properties Metric English Comments
Hardness, Rockwell B 25 - 65
25 - 65
hardness as annealed, typical
Hardness, Vickers 80 - 120
80 - 120
hardness as annealed, typical
Tensile Strength >= 160 MPa

@Temperature 249 °C
 >= 23200 psi

@Temperature 480 °F
>= 175 MPa

@Temperature 199 °C
 >= 25400 psi

@Temperature 390 °F
>= 200 MPa

@Temperature 98.9 °C
 >= 29000 psi

@Temperature 210 °F
>= 207 MPa

@Temperature 21.1 °C
 >= 30000 psi

@Temperature 70.0 °F
Tensile Strength, Ultimate 241 - 310 MPa

@Temperature 20.0 °C
 35000 - 45000 psi

@Temperature 68.0 °F
 typical
Tensile Strength, Yield 138 - 207 MPa

@Temperature 20.0 °C
 20000 - 30000 psi

@Temperature 68.0 °F
 typical
>= 69.6 MPa

@Strain 0.200 %,
Temperature 249 °C
 >= 10100 psi

@Strain 0.200 %,
Temperature 480 °F
>= 80.0 MPa

@Strain 0.200 %,
Temperature 199 °C
 >= 11600 psi

@Strain 0.200 %,
Temperature 390 °F
>= 100 MPa

@Strain 0.200 %,
Temperature 98.9 °C
 >= 14500 psi

@Strain 0.200 %,
Temperature 210 °F
>= 138 MPa

@Strain 0.200 %,
Temperature 21.1 °C
 >= 20000 psi

@Strain 0.200 %,
Temperature 70.0 °F
Elongation at Break >= 10 %

@Temperature 199 °C
 >= 10 %

@Temperature 390 °F
>= 15 %

@Temperature 98.9 °C
 >= 15 %

@Temperature 210 °F
>= 20 %

@Temperature 21.1 °C
 >= 20 %

@Temperature 70.0 °F
Modulus of Elasticity 186 GPa
27000 ksi
Thermal Properties Metric English Comments
CTE, linear 6.48 µm/m-°C

@Temperature 20.0 - 500 °C
 3.60 µin/in-°F

@Temperature 68.0 - 932 °F
Specific Heat Capacity 0.141 J/g-°C

@Temperature 100 °C
 0.0336 BTU/lb-°F

@Temperature 212 °F
Thermal Conductivity 55.3 W/m-K

@Temperature 20.0 - 100 °C
 384 BTU-in/hr-ft²-°F

@Temperature 68.0 - 212 °F
Melting Point 3017 °C
5463 °F
Component Elements Properties Metric English Comments
Carbon, C <= 0.0050 %
<= 0.0050 %
Hydrogen, H <= 0.0010 %
<= 0.0010 %
Iron, Fe <= 0.0050 %
<= 0.0050 %
Molybdenum, Mo <= 0.020 %
<= 0.020 %
Nickel, Ni <= 0.0050 %
<= 0.0050 %
Niobium, Nb (Columbium, Cb) <= 0.030 %
<= 0.030 %
Nitrogen, N <= 0.0050 %
<= 0.0050 %
Oxygen, O <= 0.010 %
<= 0.010 %
Silicon, Si <= 0.0010 %
<= 0.0010 %
Tantalum, Ta >= 99.884 %
>= 99.884 %
balance
Titanium, Ti <= 0.0040 %
<= 0.0040 %
Tungsten, W <= 0.030 %
<= 0.030 %
Electrical Properties Metric English Comments
Volume Resistivity 0.0000147 ohm-cm

@Temperature 0.000 - 100 °C
 0.0000147 ohm-cm

@Temperature 32.0 - 212 °F
Chemical Properties Metric English Comments
Atomic Mass 180.95
180.95
Atomic Number 73
73
Thermal Neutron Cross Section 21.3 barns/atom
21.3 barns/atom
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