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Type 3 Niobium vs. C14700 Copper

Type 3 niobium belongs to the otherwise unclassified metals classification, while C14700 copper belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is Type 3 niobium and the bottom bar is C14700 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 23
9.1 to 35
Poisson's Ratio 0.4
0.34
Shear Modulus, GPa 38
43
Tensile Strength: Ultimate (UTS), MPa 220
240 to 320
Tensile Strength: Yield (Proof), MPa 140
85 to 250

Thermal Properties

Latent Heat of Fusion, J/g 310
210
Specific Heat Capacity, J/kg-K 270
390
Thermal Conductivity, W/m-K 42
370
Thermal Expansion, µm/m-K 7.3
17

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.9
Embodied Water, L/kg 160
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
25 to 65
Resilience: Unit (Modulus of Resilience), kJ/m3 93
31 to 280
Stiffness to Weight: Axial, points 6.8
7.2
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 7.2
7.3 to 10
Strength to Weight: Bending, points 9.5
9.5 to 12
Thermal Diffusivity, mm2/s 18
110
Thermal Shock Resistance, points 21
8.4 to 12

Alloy Composition

Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
99.395 to 99.798
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.0050
0
Molybdenum (Mo), % 0 to 0.010
0
Nickel (Ni), % 0 to 0.0050
0
Niobium (Nb), % 98.6 to 99.2
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0.0020 to 0.0050
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0
0.2 to 0.5
Tantalum (Ta), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.030
0
Zirconium (Zr), % 0.8 to 1.2
0
Residuals, % 0
0 to 0.1