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ACI-ASTM CA6NM Steel vs. 4015 Aluminum

ACI-ASTM CA6NM steel belongs to the iron alloys classification, while 4015 aluminum belongs to the aluminum alloys. There are 30 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 CA6NM steel and the bottom bar is 4015 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
35 to 70
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 17
1.1 to 23
Fatigue Strength, MPa 380
46 to 71
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 850
130 to 220
Tensile Strength: Yield (Proof), MPa 620
50 to 200

Thermal Properties

Latent Heat of Fusion, J/g 280
420
Maximum Temperature: Mechanical, °C 770
160
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
160
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
41
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.5
8.1
Embodied Energy, MJ/kg 34
150
Embodied Water, L/kg 110
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
18 to 290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 30
13 to 22
Strength to Weight: Bending, points 26
21 to 30
Thermal Diffusivity, mm2/s 6.7
66
Thermal Shock Resistance, points 31
5.7 to 9.7

Alloy Composition

Aluminum (Al), % 0
94.9 to 97.9
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 78.4 to 84.6
0 to 0.7
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0 to 1.0
0.6 to 1.2
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
1.4 to 2.2
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15