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2095 Aluminum vs. SAE-AISI S1 Steel

2095 aluminum belongs to the aluminum alloys classification, while SAE-AISI S1 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 2095 aluminum and the bottom bar is SAE-AISI S1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 700
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Melting Completion (Liquidus), °C 660
1500
Melting Onset (Solidus), °C 540
1450
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 130
41
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.7
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 31
8.0
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.6
2.6
Embodied Energy, MJ/kg 160
37
Embodied Water, L/kg 1470
56

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 65
24 to 64
Strength to Weight: Bending, points 59
22 to 42
Thermal Diffusivity, mm2/s 49
11
Thermal Shock Resistance, points 31
21 to 56

Alloy Composition

Aluminum (Al), % 91.3 to 94.9
0
Carbon (C), % 0
0.4 to 0.55
Chromium (Cr), % 0
1.0 to 1.8
Copper (Cu), % 3.9 to 4.6
0 to 0.25
Iron (Fe), % 0 to 0.15
91.6 to 96.7
Lithium (Li), % 0.7 to 1.5
0
Magnesium (Mg), % 0.25 to 0.8
0
Manganese (Mn), % 0 to 0.25
0.1 to 0.4
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.12
0.15 to 1.2
Silver (Ag), % 0.25 to 0.6
0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Tungsten (W), % 0
1.5 to 3.0
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.25
0
Zirconium (Zr), % 0.040 to 0.18
0
Residuals, % 0 to 0.15
0