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SAE-AISI 1140 Steel vs. A357.0 Aluminum

SAE-AISI 1140 steel belongs to the iron alloys classification, while A357.0 aluminum belongs to the aluminum alloys. There are 31 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 1140 steel and the bottom bar is A357.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 180
100
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 14 to 18
3.7
Fatigue Strength, MPa 230 to 370
100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 72
26
Shear Strength, MPa 370 to 420
240
Tensile Strength: Ultimate (UTS), MPa 600 to 700
350
Tensile Strength: Yield (Proof), MPa 340 to 570
270

Thermal Properties

Latent Heat of Fusion, J/g 250
500
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
610
Melting Onset (Solidus), °C 1420
560
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 51
160
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
140

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
12
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 93
12
Resilience: Unit (Modulus of Resilience), kJ/m3 310 to 870
520
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
53
Strength to Weight: Axial, points 21 to 25
38
Strength to Weight: Bending, points 20 to 22
43
Thermal Diffusivity, mm2/s 14
68
Thermal Shock Resistance, points 18 to 21
17

Alloy Composition

Aluminum (Al), % 0
90.8 to 93
Beryllium (Be), % 0
0.040 to 0.070
Carbon (C), % 0.37 to 0.44
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 98.4 to 98.9
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.7
Manganese (Mn), % 0.7 to 1.0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
6.5 to 7.5
Sulfur (S), % 0.080 to 0.13
0
Titanium (Ti), % 0
0.040 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15