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C71500 Copper-nickel vs. R05200 Tantalum

C71500 copper-nickel belongs to the copper alloys classification, while R05200 tantalum belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is C71500 copper-nickel and the bottom bar is R05200 tantalum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
190
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 52
69
Tensile Strength: Ultimate (UTS), MPa 380 to 620
210 to 540

Thermal Properties

Latent Heat of Fusion, J/g 230
140
Specific Heat Capacity, J/kg-K 400
140
Thermal Conductivity, W/m-K 28
59
Thermal Expansion, µm/m-K 16
6.5

Otherwise Unclassified Properties

Density, g/cm3 8.9
17
Embodied Water, L/kg 280
650

Common Calculations

Stiffness to Weight: Axial, points 8.6
6.2
Stiffness to Weight: Bending, points 19
11
Strength to Weight: Axial, points 12 to 19
3.6 to 9.0
Strength to Weight: Bending, points 13 to 18
4.8 to 8.8
Thermal Diffusivity, mm2/s 7.7
25
Thermal Shock Resistance, points 12 to 20
13 to 32

Alloy Composition

Carbon (C), % 0
0 to 0.010
Copper (Cu), % 63.5 to 70.6
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0.4 to 1.0
0 to 0.010
Lead (Pb), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 29 to 33
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
99.8 to 100
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
0 to 0.050
Zinc (Zn), % 0 to 1.0
0
Residuals, % 0 to 0.5
0