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224.0 Aluminum vs. ACI-ASTM CN7MS Steel

224.0 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CN7MS steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, 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 224.0 aluminum and the bottom bar is ACI-ASTM CN7MS steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 4.0 to 10
39
Fatigue Strength, MPa 86 to 120
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 380 to 420
540
Tensile Strength: Yield (Proof), MPa 280 to 330
230

Thermal Properties

Latent Heat of Fusion, J/g 390
340
Maximum Temperature: Mechanical, °C 220
1040
Melting Completion (Liquidus), °C 650
1400
Melting Onset (Solidus), °C 550
1350
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 120
12
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 11
28
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.3
5.1
Embodied Energy, MJ/kg 160
71
Embodied Water, L/kg 1150
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 35
170
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 770
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 35 to 38
19
Strength to Weight: Bending, points 38 to 41
19
Thermal Diffusivity, mm2/s 47
3.2
Thermal Shock Resistance, points 17 to 18
13

Alloy Composition

Aluminum (Al), % 93 to 95.2
0
Carbon (C), % 0
0 to 0.070
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 4.5 to 5.5
1.5 to 2.0
Iron (Fe), % 0 to 0.1
45.4 to 53.5
Manganese (Mn), % 0.2 to 0.5
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), % 0 to 0.060
2.5 to 3.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.35
0
Vanadium (V), % 0.050 to 0.15
0
Zirconium (Zr), % 0.1 to 0.25
0
Residuals, % 0 to 0.1
0