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ACI-ASTM CN7MS Steel vs. EN AC-42200 Aluminum

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while EN AC-42200 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-42200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
89 to 100
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 39
3.0 to 6.7
Fatigue Strength, MPa 200
86 to 90
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 540
320
Tensile Strength: Yield (Proof), MPa 230
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 340
500
Maximum Temperature: Mechanical, °C 1040
170
Melting Completion (Liquidus), °C 1400
610
Melting Onset (Solidus), °C 1350
600
Specific Heat Capacity, J/kg-K 480
910
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
2.6
Embodied Carbon, kg CO2/kg material 5.1
8.0
Embodied Energy, MJ/kg 71
150
Embodied Water, L/kg 180
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
9.0 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 140
410 to 490
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 19
34 to 35
Strength to Weight: Bending, points 19
40 to 41
Thermal Diffusivity, mm2/s 3.2
66
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 0
91 to 93.1
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
0 to 0.050
Iron (Fe), % 45.4 to 53.5
0 to 0.19
Magnesium (Mg), % 0
0.45 to 0.7
Manganese (Mn), % 0 to 1.0
0 to 0.1
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 22 to 25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 2.5 to 3.5
6.5 to 7.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.1