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EN AC-71100 Aluminum vs. EN 1.7725 Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while EN 1.7725 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 AC-71100 aluminum and the bottom bar is EN 1.7725 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
250 to 300
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
14
Fatigue Strength, MPa 150
390 to 550
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260
830 to 1000
Tensile Strength: Yield (Proof), MPa 230
610 to 860

Thermal Properties

Latent Heat of Fusion, J/g 490
250
Maximum Temperature: Mechanical, °C 170
440
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 520
1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 97
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.9
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
1.8
Embodied Energy, MJ/kg 140
24
Embodied Water, L/kg 1010
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
110 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 360
980 to 1940
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
29 to 35
Strength to Weight: Bending, points 31
25 to 28
Thermal Shock Resistance, points 12
24 to 29

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
0.27 to 0.34
Chromium (Cr), % 0
1.3 to 1.7
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
95.7 to 97.5
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0.6 to 1.0
Molybdenum (Mo), % 0
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 7.5 to 9.5
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0