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4343 Aluminum vs. SAE-AISI D2 Steel

4343 aluminum belongs to the aluminum alloys classification, while SAE-AISI D2 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 4343 aluminum and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.4
5.0 to 16
Fatigue Strength, MPa 45
310 to 860
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
75
Shear Strength, MPa 64
460 to 1160
Tensile Strength: Ultimate (UTS), MPa 110
760 to 2000
Tensile Strength: Yield (Proof), MPa 62
470 to 1510

Thermal Properties

Latent Heat of Fusion, J/g 510
270
Melting Completion (Liquidus), °C 620
1440
Melting Onset (Solidus), °C 580
1390
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 180
31
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 150
5.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.0
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.9
3.4
Embodied Energy, MJ/kg 150
50
Embodied Water, L/kg 1100
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.1
92 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 27
570 to 5940
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 12
27 to 72
Strength to Weight: Bending, points 20
24 to 46
Thermal Diffusivity, mm2/s 77
8.3
Thermal Shock Resistance, points 5.2
25 to 67

Alloy Composition

Aluminum (Al), % 90.3 to 93.2
0
Carbon (C), % 0
1.4 to 1.6
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 0 to 0.8
81.3 to 86.9
Manganese (Mn), % 0 to 0.1
0 to 0.6
Molybdenum (Mo), % 0
0.7 to 1.2
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 6.8 to 8.2
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 1.1
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0