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380.0 Aluminum vs. EN 1.4729 Stainless Steel

380.0 aluminum belongs to the aluminum alloys classification, while EN 1.4729 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 1.4729 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
260
Elastic (Young's, Tensile) Modulus, GPa 74
190
Elongation at Break, % 3.0
15
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
75

Thermal Properties

Latent Heat of Fusion, J/g 510
300
Maximum Temperature: Mechanical, °C 170
850
Melting Completion (Liquidus), °C 590
1420
Melting Onset (Solidus), °C 540
1380
Specific Heat Capacity, J/kg-K 870
490
Thermal Conductivity, W/m-K 100
24
Thermal Expansion, µm/m-K 22
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 83
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.5
Density, g/cm3 2.9
7.6
Embodied Carbon, kg CO2/kg material 7.5
2.1
Embodied Energy, MJ/kg 140
29
Embodied Water, L/kg 1040
100

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 48
25
Thermal Diffusivity, mm2/s 40
6.5

Alloy Composition

Aluminum (Al), % 79.6 to 89.5
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 3.0 to 4.0
0
Iron (Fe), % 0 to 2.0
80.4 to 86.7
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.5
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 7.5 to 9.5
1.0 to 2.5
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