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C15900 Copper vs. Type 4 Niobium

C15900 copper belongs to the copper alloys classification, while Type 4 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C15900 copper and the bottom bar is Type 4 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 6.5
23
Poisson's Ratio 0.34
0.4
Shear Modulus, GPa 43
38
Tensile Strength: Ultimate (UTS), MPa 720
220
Tensile Strength: Yield (Proof), MPa 240
140

Thermal Properties

Latent Heat of Fusion, J/g 210
310
Specific Heat Capacity, J/kg-K 390
270
Thermal Conductivity, W/m-K 280
42
Thermal Expansion, µm/m-K 17
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.8
8.6
Embodied Water, L/kg 310
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
44
Resilience: Unit (Modulus of Resilience), kJ/m3 260
93
Stiffness to Weight: Axial, points 7.2
6.8
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 23
7.2
Strength to Weight: Bending, points 20
9.5
Thermal Diffusivity, mm2/s 80
18
Thermal Shock Resistance, points 26
21

Alloy Composition

Aluminum (Al), % 0.76 to 0.84
0
Carbon (C), % 0.27 to 0.33
0 to 0.010
Copper (Cu), % 97.5 to 97.9
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.040
0 to 0.010
Molybdenum (Mo), % 0
0 to 0.050
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
98.1 to 99.2
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0.4 to 0.54
0 to 0.025
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.5
Titanium (Ti), % 0.66 to 0.74
0 to 0.020
Tungsten (W), % 0
0 to 0.050
Zirconium (Zr), % 0
0.8 to 1.2