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SAE-AISI 1118 Steel vs. EN AC-44200 Aluminum

SAE-AISI 1118 steel belongs to the iron alloys classification, while EN AC-44200 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 SAE-AISI 1118 steel and the bottom bar is EN AC-44200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
60
Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 13
6.2
Fatigue Strength, MPa 260
63
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 490
180
Tensile Strength: Yield (Proof), MPa 410
86

Thermal Properties

Latent Heat of Fusion, J/g 250
570
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
590
Melting Onset (Solidus), °C 1420
580
Specific Heat Capacity, J/kg-K 470
910
Thermal Conductivity, W/m-K 52
130
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
9.5
Density, g/cm3 7.8
2.5
Embodied Carbon, kg CO2/kg material 1.4
7.7
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 47
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 61
9.1
Resilience: Unit (Modulus of Resilience), kJ/m3 450
51
Stiffness to Weight: Axial, points 13
16
Stiffness to Weight: Bending, points 24
55
Strength to Weight: Axial, points 17
20
Strength to Weight: Bending, points 18
28
Thermal Diffusivity, mm2/s 14
59
Thermal Shock Resistance, points 15
8.4

Alloy Composition

Aluminum (Al), % 0
85.2 to 89.5
Carbon (C), % 0.14 to 0.2
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 98 to 98.5
0 to 0.55
Manganese (Mn), % 1.3 to 1.6
0 to 0.35
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
10.5 to 13.5
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15