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380.0 Aluminum vs. EN 1.7221 Steel

380.0 aluminum belongs to the aluminum alloys classification, while EN 1.7221 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 380.0 aluminum and the bottom bar is EN 1.7221 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
200 to 230
Elastic (Young's, Tensile) Modulus, GPa 74
190
Elongation at Break, % 3.0
11 to 17
Fatigue Strength, MPa 140
290 to 390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 28
73
Tensile Strength: Ultimate (UTS), MPa 320
650 to 780
Tensile Strength: Yield (Proof), MPa 160
430 to 630

Thermal Properties

Latent Heat of Fusion, J/g 510
250
Maximum Temperature: Mechanical, °C 170
420
Melting Completion (Liquidus), °C 590
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 100
44
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 83
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.4
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.5
1.5
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 1040
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0
83 to 98
Resilience: Unit (Modulus of Resilience), kJ/m3 170
490 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 48
24
Strength to Weight: Axial, points 31
23 to 27
Strength to Weight: Bending, points 36
21 to 24
Thermal Diffusivity, mm2/s 40
12
Thermal Shock Resistance, points 14
19 to 23

Alloy Composition

Aluminum (Al), % 79.6 to 89.5
0
Carbon (C), % 0
0.22 to 0.29
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 2.0
96.8 to 98.3
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.5 to 0.8
Molybdenum (Mo), % 0
0.15 to 0.3
Nickel (Ni), % 0 to 0.5
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 7.5 to 9.5
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0