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EN 1.0258 Steel vs. A384.0 Aluminum

EN 1.0258 steel belongs to the iron alloys classification, while A384.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is EN 1.0258 steel and the bottom bar is A384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
74
Elongation at Break, % 23
2.5
Fatigue Strength, MPa 200
140
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
28
Shear Strength, MPa 310
200
Tensile Strength: Ultimate (UTS), MPa 490
330
Tensile Strength: Yield (Proof), MPa 290
170

Thermal Properties

Latent Heat of Fusion, J/g 250
550
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
610
Melting Onset (Solidus), °C 1420
510
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 49
96
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
23
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
73

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
11
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 1.5
7.5
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 47
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 95
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 220
180
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 17
32
Strength to Weight: Bending, points 18
38
Thermal Diffusivity, mm2/s 13
39
Thermal Shock Resistance, points 16
15

Alloy Composition


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Aluminum (Al), % 0
79.3 to 86.5
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
3.0 to 4.5
Iron (Fe), % 96.9 to 100
0 to 1.3
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.4
0 to 0.5
Molybdenum (Mo), % 0 to 0.080
0
Nickel (Ni), % 0 to 0.3
0 to 0.5
Niobium (Nb), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
10.5 to 12
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.35
Titanium (Ti), % 0 to 0.040
0
Vanadium (V), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5