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SAE-AISI 1140 Steel vs. 443.0 Aluminum

SAE-AISI 1140 steel belongs to the iron alloys classification, while 443.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1140 steel and the bottom bar is 443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
41
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 14 to 18
5.6
Fatigue Strength, MPa 230 to 370
55
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
27
Shear Strength, MPa 370 to 420
96
Tensile Strength: Ultimate (UTS), MPa 600 to 700
150
Tensile Strength: Yield (Proof), MPa 340 to 570
65

Thermal Properties

Latent Heat of Fusion, J/g 250
470
Maximum Temperature: Mechanical, °C 400
180
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
580
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 51
150
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
38
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
130

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.0
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
30
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
52
Strength to Weight: Axial, points 21 to 25
16
Strength to Weight: Bending, points 20 to 22
23
Thermal Diffusivity, mm2/s 14
61
Thermal Shock Resistance, points 18 to 21
6.9

Alloy Composition

Aluminum (Al), % 0
90.7 to 95.5
Carbon (C), % 0.37 to 0.44
0
Chromium (Cr), % 0
0 to 0.25
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 98.4 to 98.9
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0.7 to 1.0
0 to 0.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
4.5 to 6.0
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.35