MakeItFrom.com
Menu (ESC)

2017A Aluminum vs. SAE-AISI 4140 Steel

2017A aluminum belongs to the aluminum alloys classification, while SAE-AISI 4140 steel belongs to the iron 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 2017A aluminum and the bottom bar is SAE-AISI 4140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 2.2 to 14
11 to 26
Fatigue Strength, MPa 92 to 130
360 to 650
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 120 to 270
410 to 660
Tensile Strength: Ultimate (UTS), MPa 200 to 460
690 to 1080
Tensile Strength: Yield (Proof), MPa 110 to 290
590 to 990

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 220
420
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 510
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
43
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.4
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.2
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1140
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.7 to 53
74 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 90 to 570
920 to 2590
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 19 to 42
25 to 38
Strength to Weight: Bending, points 26 to 44
22 to 30
Thermal Diffusivity, mm2/s 56
12
Thermal Shock Resistance, points 8.9 to 20
20 to 32

Alloy Composition

Aluminum (Al), % 91.3 to 95.5
0
Carbon (C), % 0
0.38 to 0.43
Chromium (Cr), % 0 to 0.1
0.8 to 1.1
Copper (Cu), % 3.5 to 4.5
0
Iron (Fe), % 0 to 0.7
96.8 to 97.8
Magnesium (Mg), % 0.4 to 1.0
0
Manganese (Mn), % 0.4 to 1.0
0.75 to 1.0
Molybdenum (Mo), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.2 to 0.8
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants