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7003 Aluminum vs. ACI-ASTM CF10SMnN Steel

7003 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF10SMnN steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 7003 aluminum and the bottom bar is ACI-ASTM CF10SMnN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 11
34
Fatigue Strength, MPa 130 to 150
260
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 350 to 390
660
Tensile Strength: Yield (Proof), MPa 300 to 310
330

Thermal Properties

Latent Heat of Fusion, J/g 380
340
Maximum Temperature: Mechanical, °C 200
900
Melting Completion (Liquidus), °C 630
1360
Melting Onset (Solidus), °C 510
1310
Specific Heat Capacity, J/kg-K 870
500
Thermal Expansion, µm/m-K 24
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.9
7.5
Embodied Carbon, kg CO2/kg material 8.1
3.1
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1140
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37 to 41
180
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 710
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
26
Strength to Weight: Axial, points 33 to 37
24
Strength to Weight: Bending, points 37 to 40
22
Thermal Shock Resistance, points 15 to 17
15

Alloy Composition

Aluminum (Al), % 90.6 to 94.5
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.2
16 to 18
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.35
59.1 to 65.4
Magnesium (Mg), % 0.5 to 1.0
0
Manganese (Mn), % 0 to 0.3
7.0 to 9.0
Nickel (Ni), % 0
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.3
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 5.0 to 6.5
0
Zirconium (Zr), % 0.050 to 0.25
0
Residuals, % 0 to 0.15
0