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4115 Aluminum vs. ACI-ASTM CF10SMnN Steel

4115 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CF10SMnN steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 4115 aluminum and the bottom bar is ACI-ASTM CF10SMnN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 38 to 68
190
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.1 to 11
34
Fatigue Strength, MPa 39 to 76
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 120 to 220
660
Tensile Strength: Yield (Proof), MPa 39 to 190
330

Thermal Properties

Latent Heat of Fusion, J/g 420
340
Maximum Temperature: Mechanical, °C 160
900
Melting Completion (Liquidus), °C 640
1360
Melting Onset (Solidus), °C 590
1310
Specific Heat Capacity, J/kg-K 900
500
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.7
7.5
Embodied Carbon, kg CO2/kg material 8.1
3.1
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 10
180
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 270
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
26
Strength to Weight: Axial, points 12 to 23
24
Strength to Weight: Bending, points 20 to 30
22
Thermal Shock Resistance, points 5.2 to 9.9
15

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0.1 to 0.5
0
Iron (Fe), % 0 to 0.7
59.1 to 65.4
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
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), % 1.8 to 2.2
3.5 to 4.5
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0