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ACI-ASTM CA28MWV Steel vs. Nuclear Grade Hafnium

ACI-ASTM CA28MWV 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 (16, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA28MWV steel and the bottom bar is nuclear grade hafnium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
78
Elongation at Break, % 11
25
Poisson's Ratio 0.28
0.26
Shear Modulus, GPa 76
31
Tensile Strength: Ultimate (UTS), MPa 1080
350
Tensile Strength: Yield (Proof), MPa 870
170

Thermal Properties

Latent Heat of Fusion, J/g 270
130
Specific Heat Capacity, J/kg-K 470
140
Thermal Expansion, µm/m-K 10
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.9
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
73
Resilience: Unit (Modulus of Resilience), kJ/m3 1920
180
Stiffness to Weight: Axial, points 14
3.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 38
7.4
Strength to Weight: Bending, points 30
8.4
Thermal Shock Resistance, points 40
55

Alloy Composition

Carbon (C), % 0.2 to 0.28
0
Chromium (Cr), % 11 to 12.5
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 81.4 to 85.8
0
Manganese (Mn), % 0.5 to 1.0
0
Molybdenum (Mo), % 0.9 to 1.3
0
Nickel (Ni), % 0.5 to 1.0
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 0.9 to 1.3
0
Vanadium (V), % 0.2 to 0.3
0
Residuals, % 0
0 to 0.23