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513.0 Aluminum vs. SAE-AISI 8655 Steel

513.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 8655 steel belongs to the iron alloys. 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 513.0 aluminum and the bottom bar is SAE-AISI 8655 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
190
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 5.7
23
Fatigue Strength, MPa 97
290
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 170
390
Tensile Strength: Ultimate (UTS), MPa 200
620
Tensile Strength: Yield (Proof), MPa 120
410

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 590
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
39
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.6
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1170
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.8
130
Resilience: Unit (Modulus of Resilience), kJ/m3 100
440
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 20
22
Strength to Weight: Bending, points 28
21
Thermal Diffusivity, mm2/s 54
10
Thermal Shock Resistance, points 8.8
18

Alloy Composition

Aluminum (Al), % 91.9 to 95.1
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0
0.4 to 0.6
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
96.4 to 97.6
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0 to 0.3
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0
0.4 to 0.7
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.3
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 1.4 to 2.2
0
Residuals, % 0 to 0.15
0