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EN AC-51500 Aluminum vs. ACI-ASTM CN7MS Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CN7MS 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-51500 aluminum and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
160
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
39
Fatigue Strength, MPa 120
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 280
540
Tensile Strength: Yield (Proof), MPa 160
230

Thermal Properties

Latent Heat of Fusion, J/g 430
340
Maximum Temperature: Mechanical, °C 170
1040
Melting Completion (Liquidus), °C 630
1400
Melting Onset (Solidus), °C 590
1350
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
28
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 9.0
5.1
Embodied Energy, MJ/kg 150
71
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
170
Resilience: Unit (Modulus of Resilience), kJ/m3 190
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
19
Strength to Weight: Bending, points 36
19
Thermal Diffusivity, mm2/s 49
3.2
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0 to 0.050
1.5 to 2.0
Iron (Fe), % 0 to 0.25
45.4 to 53.5
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0
22 to 25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.6
2.5 to 3.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0