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4015 Aluminum vs. ASTM A414 Steel

4015 aluminum belongs to the aluminum alloys classification, while ASTM A414 steel belongs to the iron alloys. 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 4015 aluminum and the bottom bar is ASTM A414 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 35 to 70
110 to 180
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.1 to 23
15 to 26
Fatigue Strength, MPa 46 to 71
140 to 260
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 82 to 120
230 to 370
Tensile Strength: Ultimate (UTS), MPa 130 to 220
360 to 590
Tensile Strength: Yield (Proof), MPa 50 to 200
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 600
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
49 to 50
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.2 to 7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.3 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.2
Density, g/cm3 2.7
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 8.1
1.5 to 1.6
Embodied Energy, MJ/kg 150
20 to 22
Embodied Water, L/kg 1160
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.4 to 24
69 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 290
100 to 330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 13 to 22
13 to 21
Strength to Weight: Bending, points 21 to 30
14 to 20
Thermal Diffusivity, mm2/s 66
13
Thermal Shock Resistance, points 5.7 to 9.7
11 to 17