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SAE-AISI 1070 Steel vs. Nuclear Grade Hafnium

SAE-AISI 1070 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 (15, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1070 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, % 10 to 13
25
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 72
31
Tensile Strength: Ultimate (UTS), MPa 640 to 760
350
Tensile Strength: Yield (Proof), MPa 420 to 560
170

Thermal Properties

Latent Heat of Fusion, J/g 250
130
Specific Heat Capacity, J/kg-K 470
140
Thermal Expansion, µm/m-K 12
5.9

Otherwise Unclassified Properties

Density, g/cm3 7.8
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 59 to 86
73
Resilience: Unit (Modulus of Resilience), kJ/m3 470 to 850
180
Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 23 to 27
7.4
Strength to Weight: Bending, points 21 to 24
8.4
Thermal Shock Resistance, points 21 to 25
55

Alloy Composition

Carbon (C), % 0.65 to 0.75
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 98.3 to 98.8
0
Manganese (Mn), % 0.6 to 0.9
0
Phosphorus (P), % 0 to 0.040
0
Sulfur (S), % 0 to 0.050
0
Residuals, % 0
0 to 0.23