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ACI-ASTM CA6N Steel vs. B390.0 Aluminum

ACI-ASTM CA6N steel belongs to the iron alloys classification, while B390.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 CA6N steel and the bottom bar is B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
76
Elongation at Break, % 17
0.88
Fatigue Strength, MPa 640
170
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 75
29
Tensile Strength: Ultimate (UTS), MPa 1080
320
Tensile Strength: Yield (Proof), MPa 1060
250

Thermal Properties

Latent Heat of Fusion, J/g 280
640
Maximum Temperature: Mechanical, °C 740
170
Melting Completion (Liquidus), °C 1440
580
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 23
130
Thermal Expansion, µm/m-K 9.9
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
27
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
88

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 7.8
2.8
Embodied Carbon, kg CO2/kg material 2.5
7.3
Embodied Energy, MJ/kg 35
130
Embodied Water, L/kg 110
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
410
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 38
32
Strength to Weight: Bending, points 30
38
Thermal Diffusivity, mm2/s 6.1
55
Thermal Shock Resistance, points 40
15

Alloy Composition

Aluminum (Al), % 0
72.7 to 79.6
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 10.5 to 12.5
0
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 77.9 to 83.5
0 to 1.3
Magnesium (Mg), % 0
0.45 to 0.65
Manganese (Mn), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 6.0 to 8.0
0 to 0.1
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
16 to 18
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 1.5
Residuals, % 0
0 to 0.2