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ACI-ASTM CN7MS Steel vs. EN AC-44300 Aluminum

ACI-ASTM CN7MS steel belongs to the iron alloys classification, while EN AC-44300 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-44300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
68
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 39
1.1
Fatigue Strength, MPa 200
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 540
270
Tensile Strength: Yield (Proof), MPa 230
150

Thermal Properties

Latent Heat of Fusion, J/g 340
570
Maximum Temperature: Mechanical, °C 1040
170
Melting Completion (Liquidus), °C 1400
590
Melting Onset (Solidus), °C 1350
580
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 12
130
Thermal Expansion, µm/m-K 16
21

Otherwise Unclassified Properties

Base Metal Price, % relative 28
9.5
Density, g/cm3 7.9
2.5
Embodied Carbon, kg CO2/kg material 5.1
7.7
Embodied Energy, MJ/kg 71
140
Embodied Water, L/kg 180
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 140
150
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
55
Strength to Weight: Axial, points 19
29
Strength to Weight: Bending, points 19
36
Thermal Diffusivity, mm2/s 3.2
58
Thermal Shock Resistance, points 13
13

Alloy Composition

Aluminum (Al), % 0
84.3 to 89.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 1.5 to 2.0
0 to 0.1
Iron (Fe), % 45.4 to 53.5
0 to 1.0
Manganese (Mn), % 0 to 1.0
0 to 0.55
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
10.5 to 13.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25