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Nuclear Grade Hafnium vs. C43500 Brass

Nuclear grade hafnium belongs to the otherwise unclassified metals classification, while C43500 brass belongs to the copper alloys. There are 17 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 nuclear grade hafnium and the bottom bar is C43500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 78
110
Elongation at Break, % 25
8.5 to 46
Poisson's Ratio 0.26
0.32
Shear Modulus, GPa 31
42
Tensile Strength: Ultimate (UTS), MPa 350
320 to 530
Tensile Strength: Yield (Proof), MPa 170
120 to 480

Thermal Properties

Latent Heat of Fusion, J/g 130
190
Specific Heat Capacity, J/kg-K 140
380
Thermal Expansion, µm/m-K 5.9
19

Otherwise Unclassified Properties

Density, g/cm3 13
8.5

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 73
44 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 180
65 to 1040
Stiffness to Weight: Axial, points 3.3
7.2
Stiffness to Weight: Bending, points 11
19
Strength to Weight: Axial, points 7.4
10 to 17
Strength to Weight: Bending, points 8.4
12 to 17
Thermal Shock Resistance, points 55
11 to 18

Alloy Composition

Copper (Cu), % 0
79 to 83
Hafnium (Hf), % 99.8 to 100
0
Iron (Fe), % 0
0 to 0.050
Lead (Pb), % 0
0 to 0.090
Tin (Sn), % 0
0.6 to 1.2
Zinc (Zn), % 0
15.4 to 20.4
Residuals, % 0
0 to 0.3