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A357.0 Aluminum vs. ACI-ASTM CD6MN Steel

A357.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CD6MN steel belongs to the iron alloys. There are 29 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 A357.0 aluminum and the bottom bar is ACI-ASTM CD6MN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.7
28
Fatigue Strength, MPa 100
370
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 350
730
Tensile Strength: Yield (Proof), MPa 270
510

Thermal Properties

Latent Heat of Fusion, J/g 500
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 560
1390
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
16
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 12
17
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 8.2
3.4
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1110
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12
180
Resilience: Unit (Modulus of Resilience), kJ/m3 520
650
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 38
26
Strength to Weight: Bending, points 43
23
Thermal Diffusivity, mm2/s 68
4.4
Thermal Shock Resistance, points 17
20

Alloy Composition

Aluminum (Al), % 90.8 to 93
0
Beryllium (Be), % 0.040 to 0.070
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.2
62.1 to 70.1
Magnesium (Mg), % 0.4 to 0.7
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
1.8 to 2.5
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 6.5 to 7.5
0 to 1.0
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0.040 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0