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EN AC-45100 Aluminum vs. ASTM A572 Steel

EN AC-45100 aluminum belongs to the aluminum alloys classification, while ASTM A572 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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-45100 aluminum and the bottom bar is ASTM A572 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 97 to 130
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.0 to 2.8
18 to 25
Fatigue Strength, MPa 82 to 99
240 to 340
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 300 to 360
470 to 620
Tensile Strength: Yield (Proof), MPa 210 to 320
330 to 510

Thermal Properties

Latent Heat of Fusion, J/g 470
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 140
51
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 95
8.2 to 8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.0
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 7.9
1.6
Embodied Energy, MJ/kg 150
22
Embodied Water, L/kg 1100
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 7.6
100 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 710
290 to 690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 30 to 35
17 to 22
Strength to Weight: Bending, points 35 to 39
17 to 21
Thermal Diffusivity, mm2/s 54
14
Thermal Shock Resistance, points 14 to 16
14 to 18