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384.0 Aluminum vs. S64512 Stainless Steel

384.0 aluminum belongs to the aluminum alloys classification, while S64512 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
330
Elastic (Young's, Tensile) Modulus, GPa 74
200
Elongation at Break, % 2.5
17
Fatigue Strength, MPa 140
540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
76
Shear Strength, MPa 200
700
Tensile Strength: Ultimate (UTS), MPa 330
1140
Tensile Strength: Yield (Proof), MPa 170
890

Thermal Properties

Latent Heat of Fusion, J/g 550
270
Maximum Temperature: Mechanical, °C 170
750
Melting Completion (Liquidus), °C 580
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 96
28
Thermal Expansion, µm/m-K 21
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 69
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
3.3
Embodied Energy, MJ/kg 140
47
Embodied Water, L/kg 1010
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
180
Resilience: Unit (Modulus of Resilience), kJ/m3 190
2020
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 32
40
Strength to Weight: Bending, points 37
31
Thermal Diffusivity, mm2/s 39
7.5
Thermal Shock Resistance, points 15
42

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0
11 to 12.5
Copper (Cu), % 3.0 to 4.5
0
Iron (Fe), % 0 to 1.3
80.6 to 84.7
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0.5 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0 to 0.5
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 10.5 to 12
0 to 0.35
Sulfur (S), % 0
0 to 0.025
Tin (Sn), % 0 to 0.35
0
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 0 to 3.0
0
Residuals, % 0 to 0.5
0