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Type 4 Niobium vs. C71500 Copper-nickel

Type 4 niobium belongs to the otherwise unclassified metals classification, while C71500 copper-nickel belongs to the copper alloys. There are 16 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is Type 4 niobium and the bottom bar is C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
140
Poisson's Ratio 0.4
0.33
Shear Modulus, GPa 38
52
Tensile Strength: Ultimate (UTS), MPa 220
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 310
230
Specific Heat Capacity, J/kg-K 270
400
Thermal Conductivity, W/m-K 42
28
Thermal Expansion, µm/m-K 7.3
16

Otherwise Unclassified Properties

Density, g/cm3 8.6
8.9
Embodied Water, L/kg 160
280

Common Calculations

Stiffness to Weight: Axial, points 6.8
8.6
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 7.2
12 to 19
Strength to Weight: Bending, points 9.5
13 to 18
Thermal Diffusivity, mm2/s 18
7.7
Thermal Shock Resistance, points 21
12 to 20

Alloy Composition

Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
63.5 to 70.6
Hafnium (Hf), % 0 to 0.020
0
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0 to 0.050
0
Nickel (Ni), % 0 to 0.0050
29 to 33
Niobium (Nb), % 98.1 to 99.2
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.025
0
Silicon (Si), % 0 to 0.0050
0
Tantalum (Ta), % 0 to 0.5
0
Titanium (Ti), % 0 to 0.020
0
Tungsten (W), % 0 to 0.050
0
Zinc (Zn), % 0
0 to 1.0
Zirconium (Zr), % 0.8 to 1.2
0
Residuals, % 0
0 to 0.5