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380.0 Aluminum vs. SAE-AISI 1340 Steel

380.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1340 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 380.0 aluminum and the bottom bar is SAE-AISI 1340 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
160 to 210
Elastic (Young's, Tensile) Modulus, GPa 74
190
Elongation at Break, % 3.0
11 to 23
Fatigue Strength, MPa 140
220 to 390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
72
Shear Strength, MPa 190
340 to 440
Tensile Strength: Ultimate (UTS), MPa 320
540 to 730
Tensile Strength: Yield (Proof), MPa 160
300 to 620

Thermal Properties

Latent Heat of Fusion, J/g 510
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 590
1450
Melting Onset (Solidus), °C 540
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 100
51
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 83
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
1.9
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.5
1.4
Embodied Energy, MJ/kg 140
19
Embodied Water, L/kg 1040
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0
78 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 170
240 to 1040
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
24
Strength to Weight: Axial, points 31
19 to 26
Strength to Weight: Bending, points 36
19 to 23
Thermal Diffusivity, mm2/s 40
14
Thermal Shock Resistance, points 14
17 to 23

Alloy Composition

Aluminum (Al), % 79.6 to 89.5
0
Carbon (C), % 0
0.38 to 0.43
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 2.0
97.2 to 97.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
1.6 to 1.9
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 7.5 to 9.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0