Tantalum - An Overview

Material: Tantalum - An Overview
Composition: >99.7%Ta typically
Property Minimum Value (S.I.) Maximum Value (S.I.) Units (S.I.) Minimum Value (Imp.) Maximum Value (Imp.) Units (Imp.)
Atomic Volume (average) 0.0108 0.011 m3/kmol 659.056 671.261 in3/kmol
Density 16.5 16.7 Mg/m3 1030.06 1042.55 lb/ft3
Energy Content 300 900 MJ/kg 32501.6 97504.8 kcal/lb
Bulk Modulus 182 228 GPa 26.3969 33.0686 106 psi
Compressive Strength 135 1060 MPa 19.5801 153.74 ksi
Ductility 0.01 0.5 0.01 0.5 NULL
Elastic Limit 135 1060 MPa 19.5801 153.74 ksi
Endurance Limit 65 700 MPa 9.42745 101.526 ksi
Fracture Toughness 90 150 MPa.m1/2 81.9042 136.507 ksi.in1/2
Hardness 500 3100 MPa 72.5189 449.617 ksi
Loss Coefficient 0.0001 0.0012 0.0001 0.0012 NULL
Modulus of Rupture 135 1060 MPa 19.5801 153.74 ksi
Poisson's Ratio 0.34 0.36 0.34 0.36 NULL
Shear Modulus 64 72 GPa 9.28241 10.4427 106 psi
Tensile Strength 170 1400 MPa 24.6564 203.053 ksi
Young's Modulus 175 190 GPa 25.3816 27.5572 106 psi
Glass Temperature K °F
Latent Heat of Fusion 145 174 kJ/kg 62.3385 74.8062 BTU/lb
Maximum Service Temperature 1640 2250 K 2492.33 3590.33 °F
Melting Point 3267 3270 K 5420.93 5426.33 °F
Minimum Service Temperature 0 K -459.67 °F
Specific Heat 138 144 J/kg.K 0.106792 0.111436 BTU/lb.F
Thermal Conductivity 54 58 W/m.K 101.09 108.578 BTU.ft/h.ft2.F
Thermal Expansion 6.4 6.6 10-6/K 11.52 11.88 10-6/°F
Breakdown Potential MV/m V/mil
Dielectric Constant NULL
Resistivity 12 15 10-8 ohm.m 12 15 10-8 ohm.m
Environmental Properties
  Resistance Factors
1=Poor 5=Excellent
Flammability 5
Fresh Water 5
Organic Solvents 5
Oxidation at 500C 4
Sea Water 5
Strong Acid 4
Strong Alkalis 5
UV 5
Wear 5
Weak Acid 5
Weak Alkalis 5

This data is provided subject to AZoM.com's terms and conditions. Data reproduced with permission of Granta Design Limited www.grantadesign.com

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