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ACI-ASTM CA40 Steel vs. 3303 Aluminum

ACI-ASTM CA40 steel belongs to the iron alloys classification, while 3303 aluminum belongs to the aluminum alloys. There are 29 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 CA40 steel and the bottom bar is 3303 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 10
23
Fatigue Strength, MPa 460
43
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 910
110
Tensile Strength: Yield (Proof), MPa 860
39

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 750
180
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1500
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
170
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
43
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
140

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
9.5
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 2.0
8.1
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 100
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
20
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
11
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
49
Strength to Weight: Axial, points 33
11
Strength to Weight: Bending, points 27
18
Thermal Diffusivity, mm2/s 6.7
67
Thermal Shock Resistance, points 33
4.8

Alloy Composition

Aluminum (Al), % 0
96.6 to 99
Carbon (C), % 0.2 to 0.4
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0.050 to 0.2
Iron (Fe), % 81.5 to 88.3
0 to 0.7
Manganese (Mn), % 0 to 1.0
1.0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.6
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15