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C68800 Brass vs. Type 1 Niobium

C68800 brass belongs to the copper alloys classification, while Type 1 niobium belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is C68800 brass and the bottom bar is Type 1 niobium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 2.0 to 36
29
Poisson's Ratio 0.32
0.4
Shear Modulus, GPa 41
38
Tensile Strength: Ultimate (UTS), MPa 570 to 890
140
Tensile Strength: Yield (Proof), MPa 390 to 790
82

Thermal Properties

Latent Heat of Fusion, J/g 190
320
Specific Heat Capacity, J/kg-K 400
270
Thermal Conductivity, W/m-K 40
52
Thermal Expansion, µm/m-K 19
7.3

Otherwise Unclassified Properties

Density, g/cm3 8.2
8.6
Embodied Water, L/kg 350
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 180
35
Resilience: Unit (Modulus of Resilience), kJ/m3 710 to 2860
32
Stiffness to Weight: Axial, points 7.3
6.8
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 19 to 30
4.6
Strength to Weight: Bending, points 19 to 25
7.1
Thermal Diffusivity, mm2/s 12
23
Thermal Shock Resistance, points 19 to 30
13

Alloy Composition

Aluminum (Al), % 3.0 to 3.8
0
Carbon (C), % 0
0 to 0.010
Cobalt (Co), % 0.25 to 0.55
0
Copper (Cu), % 70.8 to 75.5
0
Hafnium (Hf), % 0
0 to 0.020
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 0 to 0.2
0 to 0.0050
Lead (Pb), % 0 to 0.050
0
Molybdenum (Mo), % 0
0 to 0.010
Nickel (Ni), % 0
0 to 0.0050
Niobium (Nb), % 0
99.7 to 100
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Silicon (Si), % 0
0 to 0.0050
Tantalum (Ta), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.020
Tungsten (W), % 0
0 to 0.030
Zinc (Zn), % 21.3 to 24.1
0
Zirconium (Zr), % 0
0 to 0.020
Residuals, % 0 to 0.5
0