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EN AC-42100 Aluminum vs. SAE-AISI D2 Steel

EN AC-42100 aluminum belongs to the aluminum alloys classification, while SAE-AISI D2 steel belongs to the iron alloys. There are 28 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 EN AC-42100 aluminum and the bottom bar is SAE-AISI D2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 3.4 to 9.0
5.0 to 16
Fatigue Strength, MPa 76 to 82
310 to 860
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 280 to 290
760 to 2000
Tensile Strength: Yield (Proof), MPa 210 to 230
470 to 1510

Thermal Properties

Latent Heat of Fusion, J/g 500
270
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 600
1390
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 150
31
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
4.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
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 8.0
3.4
Embodied Energy, MJ/kg 150
50
Embodied Water, L/kg 1110
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
92 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
570 to 5940
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 30 to 31
27 to 72
Strength to Weight: Bending, points 37 to 38
24 to 46
Thermal Diffusivity, mm2/s 66
8.3
Thermal Shock Resistance, points 13
25 to 67

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
0
Carbon (C), % 0
1.4 to 1.6
Chromium (Cr), % 0
11 to 13
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.19
81.3 to 86.9
Magnesium (Mg), % 0.25 to 0.45
0
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), % 6.5 to 7.5
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0 to 1.1
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0