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SAE-AISI 1345 Steel vs. 7010 Aluminum

SAE-AISI 1345 steel belongs to the iron alloys classification, while 7010 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 1345 steel and the bottom bar is 7010 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 11 to 23
3.9 to 6.8
Fatigue Strength, MPa 230 to 390
160 to 190
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 72
26
Shear Strength, MPa 370 to 440
300 to 340
Tensile Strength: Ultimate (UTS), MPa 590 to 730
520 to 590
Tensile Strength: Yield (Proof), MPa 330 to 620
410 to 540

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 400
200
Melting Completion (Liquidus), °C 1450
630
Melting Onset (Solidus), °C 1410
480
Specific Heat Capacity, J/kg-K 470
860
Thermal Conductivity, W/m-K 51
150
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
10
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.4
8.3
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 48
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 120
22 to 33
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 1040
1230 to 2130
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 21 to 26
47 to 54
Strength to Weight: Bending, points 20 to 23
47 to 52
Thermal Diffusivity, mm2/s 14
58
Thermal Shock Resistance, points 19 to 23
22 to 26

Alloy Composition

Aluminum (Al), % 0
87.9 to 90.6
Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0
0 to 0.050
Copper (Cu), % 0
1.5 to 2.0
Iron (Fe), % 97.2 to 97.8
0 to 0.15
Magnesium (Mg), % 0
2.1 to 2.6
Manganese (Mn), % 1.6 to 1.9
0 to 0.1
Nickel (Ni), % 0
0 to 0.050
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.12
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 0
5.7 to 6.7
Zirconium (Zr), % 0
0.1 to 0.16
Residuals, % 0
0 to 0.15