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SAE-AISI 5140 Steel vs. 710.0 Aluminum

SAE-AISI 5140 steel belongs to the iron alloys classification, while 710.0 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 5140 steel and the bottom bar is 710.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
75
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 12 to 29
2.2 to 3.6
Fatigue Strength, MPa 220 to 570
55 to 110
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
26
Shear Strength, MPa 360 to 600
180
Tensile Strength: Ultimate (UTS), MPa 560 to 970
240 to 250
Tensile Strength: Yield (Proof), MPa 290 to 840
160

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 420
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
610
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 45
140
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
35
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
110

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.4
8.0
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 49
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
4.9 to 7.9
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
180 to 190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 20 to 34
23
Strength to Weight: Bending, points 19 to 28
29
Thermal Diffusivity, mm2/s 12
53
Thermal Shock Resistance, points 16 to 29
10 to 11

Alloy Composition

Aluminum (Al), % 0
90.5 to 93.1
Carbon (C), % 0.38 to 0.43
0
Chromium (Cr), % 0.7 to 0.9
0
Copper (Cu), % 0
0.35 to 0.65
Iron (Fe), % 97.3 to 98.1
0 to 0.5
Magnesium (Mg), % 0
0.6 to 0.8
Manganese (Mn), % 0.7 to 0.9
0 to 0.050
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.15
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15