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ASTM A732 Cast Steel vs. Nuclear Grade Hafnium

ASTM A732 cast steel belongs to the iron alloys classification, while nuclear grade hafnium belongs to the otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM A732 cast steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
78
Elongation at Break, % 4.0 to 25
25
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 72 to 73
31
Tensile Strength: Ultimate (UTS), MPa 460 to 1470
350
Tensile Strength: Yield (Proof), MPa 310 to 1340
170

Thermal Properties

Latent Heat of Fusion, J/g 250 to 260
130
Specific Heat Capacity, J/kg-K 470 to 480
140
Thermal Expansion, µm/m-K 13
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.8 to 7.9
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 45 to 130
73
Resilience: Unit (Modulus of Resilience), kJ/m3 260 to 4770
180
Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 16 to 52
7.4
Strength to Weight: Bending, points 17 to 37
8.4
Thermal Shock Resistance, points 14 to 43
55