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ACI-ASTM CN7M Steel vs. EN AC-51500 Aluminum

ACI-ASTM CN7M steel belongs to the iron alloys classification, while EN AC-51500 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 CN7M steel and the bottom bar is EN AC-51500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
80
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 44
5.6
Fatigue Strength, MPa 190
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 480
280
Tensile Strength: Yield (Proof), MPa 200
160

Thermal Properties

Latent Heat of Fusion, J/g 310
430
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1410
630
Melting Onset (Solidus), °C 1450
590
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 21
120
Thermal Expansion, µm/m-K 15
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.6
26
Electrical Conductivity: Equal Weight (Specific), % IACS 1.8
88

Otherwise Unclassified Properties

Base Metal Price, % relative 32
9.5
Density, g/cm3 8.1
2.6
Embodied Carbon, kg CO2/kg material 5.6
9.0
Embodied Energy, MJ/kg 78
150
Embodied Water, L/kg 210
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
13
Resilience: Unit (Modulus of Resilience), kJ/m3 110
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 17
29
Strength to Weight: Bending, points 17
36
Thermal Diffusivity, mm2/s 5.6
49
Thermal Shock Resistance, points 12
13

Alloy Composition

Aluminum (Al), % 0
89.8 to 93.1
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 19 to 22
0
Copper (Cu), % 3.0 to 4.0
0 to 0.050
Iron (Fe), % 37.4 to 48.5
0 to 0.25
Magnesium (Mg), % 0
4.7 to 6.0
Manganese (Mn), % 0 to 1.5
0.4 to 0.8
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
1.8 to 2.6
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.15