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384.0 Aluminum vs. EN 1.4517 Stainless Steel

384.0 aluminum belongs to the aluminum alloys classification, while EN 1.4517 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 384.0 aluminum and the bottom bar is EN 1.4517 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
200
Elongation at Break, % 2.5
25
Fatigue Strength, MPa 140
380
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 28
79
Tensile Strength: Ultimate (UTS), MPa 330
730
Tensile Strength: Yield (Proof), MPa 170
550

Thermal Properties

Latent Heat of Fusion, J/g 550
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 580
1430
Melting Onset (Solidus), °C 530
1390
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 96
17
Thermal Expansion, µm/m-K 21
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 69
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 11
20
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
3.8
Embodied Energy, MJ/kg 140
53
Embodied Water, L/kg 1010
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
170
Resilience: Unit (Modulus of Resilience), kJ/m3 190
740
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 32
26
Strength to Weight: Bending, points 37
23
Thermal Diffusivity, mm2/s 39
4.6
Thermal Shock Resistance, points 15
20

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
24.5 to 26.5
Copper (Cu), % 3.0 to 4.5
2.8 to 3.5
Iron (Fe), % 0 to 1.3
56.7 to 65.1
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 0 to 0.5
5.0 to 7.0
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 10.5 to 12
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0