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ACI-ASTM CN7MS Steel vs. EN AC-45300 Aluminum

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while EN AC-45300 aluminum belongs to the aluminum 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 ACI-ASTM CN7MS steel and the bottom bar is EN AC-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
94 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 39
1.0 to 2.8
Fatigue Strength, MPa 200
59 to 72
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 540
220 to 290
Tensile Strength: Yield (Proof), MPa 230
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 340
470
Maximum Temperature: Mechanical, °C 1040
170
Melting Completion (Liquidus), °C 1400
630
Melting Onset (Solidus), °C 1350
590
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 12
150
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 28
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 5.1
8.0
Embodied Energy, MJ/kg 71
150
Embodied Water, L/kg 180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
2.7 to 5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 140
160 to 390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 19
23 to 29
Strength to Weight: Bending, points 19
30 to 35
Thermal Diffusivity, mm2/s 3.2
60
Thermal Shock Resistance, points 13
10 to 13

Alloy Composition

Aluminum (Al), % 0
90.2 to 94.2
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
1.0 to 1.5
Iron (Fe), % 45.4 to 53.5
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.35 to 0.65
Manganese (Mn), % 0 to 1.0
0 to 0.55
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0 to 0.25
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 2.5 to 3.5
4.5 to 5.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15