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SAE-AISI D3 Steel vs. 772.0 Aluminum

SAE-AISI D3 steel belongs to the iron alloys classification, while 772.0 aluminum belongs to the aluminum alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 D3 steel and the bottom bar is 772.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 9.8 to 15
6.3 to 8.4
Fatigue Strength, MPa 310 to 940
94 to 160
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 74
26
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
260 to 320
Tensile Strength: Yield (Proof), MPa 480 to 1550
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 270
380
Melting Completion (Liquidus), °C 1430
630
Melting Onset (Solidus), °C 1390
580
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 31
150
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
35
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
110

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
9.5
Density, g/cm3 7.7
3.0
Embodied Carbon, kg CO2/kg material 3.2
8.0
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 100
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97 to 180
16 to 25
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 28 to 74
25 to 31
Strength to Weight: Bending, points 24 to 47
31 to 36
Thermal Diffusivity, mm2/s 8.3
58
Thermal Shock Resistance, points 23 to 63
11 to 14

Alloy Composition

Aluminum (Al), % 0
91.2 to 93.2
Carbon (C), % 2.0 to 2.4
0
Chromium (Cr), % 11 to 13.5
0.060 to 0.2
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 80.3 to 87
0 to 0.15
Magnesium (Mg), % 0
0.6 to 0.8
Manganese (Mn), % 0 to 0.6
0 to 0.1
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.1 to 0.2
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 1.0
0
Zinc (Zn), % 0
6.0 to 7.0
Residuals, % 0
0 to 0.15