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ACI-ASTM CA15M Steel vs. 5457 Aluminum

ACI-ASTM CA15M steel belongs to the iron alloys classification, while 5457 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 CA15M steel and the bottom bar is 5457 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210
32 to 55
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 20
6.0 to 22
Fatigue Strength, MPa 330
55 to 98
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 690
130 to 210
Tensile Strength: Yield (Proof), MPa 510
50 to 190

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 760
180
Melting Completion (Liquidus), °C 1450
660
Melting Onset (Solidus), °C 1410
630
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 27
180
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
46
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
150

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.1
8.4
Embodied Energy, MJ/kg 29
160
Embodied Water, L/kg 100
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 670
18 to 250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 25
13 to 21
Strength to Weight: Bending, points 22
21 to 28
Thermal Diffusivity, mm2/s 7.2
72
Thermal Shock Resistance, points 25
5.7 to 9.0

Alloy Composition

Aluminum (Al), % 0
97.8 to 99.05
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 82.1 to 88.4
0 to 0.1
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0 to 1.0
0.15 to 0.45
Molybdenum (Mo), % 0.15 to 1.0
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.65
0 to 0.080
Sulfur (S), % 0 to 0.040
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.1