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EN AC-71100 Aluminum vs. ASTM A302 Alloy Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while ASTM A302 alloy steel belongs to the iron alloys. There are 28 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 EN AC-71100 aluminum and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
20 to 23
Fatigue Strength, MPa 150
250 to 280
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 260
590 to 620
Tensile Strength: Yield (Proof), MPa 230
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 490
250
Maximum Temperature: Mechanical, °C 170
410
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
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 97
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4 to 3.0
Density, g/cm3 2.9
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 7.4
1.5 to 1.6
Embodied Energy, MJ/kg 140
20 to 21
Embodied Water, L/kg 1010
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 360
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
21 to 22
Strength to Weight: Bending, points 31
20 to 21
Thermal Shock Resistance, points 12
17 to 18