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EN 1.5521 Steel vs. Nuclear Grade Hafnium

EN 1.5521 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 EN 1.5521 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, % 11 to 21
25
Poisson's Ratio 0.29
0.26
Shear Modulus, GPa 73
31
Tensile Strength: Ultimate (UTS), MPa 430 to 1390
350
Tensile Strength: Yield (Proof), MPa 300 to 490
170

Thermal Properties

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

Otherwise Unclassified Properties

Density, g/cm3 7.8
13

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44 to 230
73
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 630
180
Stiffness to Weight: Axial, points 13
3.3
Stiffness to Weight: Bending, points 24
11
Strength to Weight: Axial, points 15 to 49
7.4
Strength to Weight: Bending, points 16 to 35
8.4
Thermal Shock Resistance, points 13 to 41
55

Alloy Composition


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Boron (B), % 0.00080 to 0.0050
0
Carbon (C), % 0.16 to 0.2
0
Copper (Cu), % 0 to 0.25
0
Hafnium (Hf), % 0
99.8 to 100
Iron (Fe), % 98 to 98.9
0
Manganese (Mn), % 0.9 to 1.2
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.3
0
Sulfur (S), % 0 to 0.025
0
Residuals, % 0
0 to 0.23