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2025 Aluminum vs. EN 1.5663 Steel

2025 aluminum belongs to the aluminum alloys classification, while EN 1.5663 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 2025 aluminum and the bottom bar is EN 1.5663 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
230
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 15
20
Fatigue Strength, MPa 130
450
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 240
470
Tensile Strength: Ultimate (UTS), MPa 400
750
Tensile Strength: Yield (Proof), MPa 260
660

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 190
430
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
8.7
Electrical Conductivity: Equal Weight (Specific), % IACS 120
9.8

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.5
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 7.9
2.3
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1130
63

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
150
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1150
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 37
26
Strength to Weight: Bending, points 40
23
Thermal Shock Resistance, points 18
22

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
0
Iron (Fe), % 0 to 1.0
88.6 to 91.2
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0.3 to 0.8
Molybdenum (Mo), % 0
0 to 0.1
Nickel (Ni), % 0
8.5 to 10
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0.5 to 1.2
0 to 0.35
Sulfur (S), % 0
0 to 0.0050
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0