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EN AC-71100 Aluminum vs. ASTM A387 Grade 2 Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while ASTM A387 grade 2 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 ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
25
Fatigue Strength, MPa 150
190 to 250
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260
470 to 550
Tensile Strength: Yield (Proof), MPa 230
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 490
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 580
1470
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
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 97
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.9
7.9
Embodied Carbon, kg CO2/kg material 7.4
1.6
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1010
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 360
180 to 320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
16 to 20
Strength to Weight: Bending, points 31
17 to 19
Thermal Shock Resistance, points 12
14 to 16

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
0.050 to 0.21
Chromium (Cr), % 0
0.5 to 0.8
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
97.1 to 98.3
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0.55 to 0.8
Molybdenum (Mo), % 0
0.45 to 0.6
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 7.5 to 9.5
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0