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384.0 Aluminum vs. S30415 Stainless Steel

384.0 aluminum belongs to the aluminum alloys classification, while S30415 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 S30415 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
190
Elastic (Young's, Tensile) Modulus, GPa 74
200
Elongation at Break, % 2.5
45
Fatigue Strength, MPa 140
300
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Shear Strength, MPa 200
470
Tensile Strength: Ultimate (UTS), MPa 330
670
Tensile Strength: Yield (Proof), MPa 170
330

Thermal Properties

Latent Heat of Fusion, J/g 550
300
Maximum Temperature: Mechanical, °C 170
940
Melting Completion (Liquidus), °C 580
1410
Melting Onset (Solidus), °C 530
1370
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 96
21
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 69
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 7.4
3.1
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 1010
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
250
Resilience: Unit (Modulus of Resilience), kJ/m3 190
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 37
22
Thermal Diffusivity, mm2/s 39
5.6
Thermal Shock Resistance, points 15
15

Alloy Composition

Aluminum (Al), % 77.3 to 86.5
0
Carbon (C), % 0
0.040 to 0.060
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
18 to 19
Copper (Cu), % 3.0 to 4.5
0
Iron (Fe), % 0 to 1.3
67.8 to 71.8
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.5
0 to 0.8
Nickel (Ni), % 0 to 0.5
9.0 to 10
Nitrogen (N), % 0
0.12 to 0.18
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 10.5 to 12
1.0 to 2.0
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