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SAE-AISI 1118 Steel vs. 513.0 Aluminum

SAE-AISI 1118 steel belongs to the iron alloys classification, while 513.0 aluminum belongs to the aluminum 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 SAE-AISI 1118 steel and the bottom bar is 513.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
55
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 13
5.7
Fatigue Strength, MPa 260
97
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 300
170
Tensile Strength: Ultimate (UTS), MPa 490
200
Tensile Strength: Yield (Proof), MPa 410
120

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
590
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
130
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
34
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
110

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.8
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 47
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61
9.8
Resilience: Unit (Modulus of Resilience), kJ/m3 450
100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 18
28
Thermal Diffusivity, mm2/s 14
54
Thermal Shock Resistance, points 15
8.8

Alloy Composition

Aluminum (Al), % 0
91.9 to 95.1
Carbon (C), % 0.14 to 0.2
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 98 to 98.5
0 to 0.4
Magnesium (Mg), % 0
3.5 to 4.5
Manganese (Mn), % 1.3 to 1.6
0 to 0.3
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
1.4 to 2.2
Residuals, % 0
0 to 0.15