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6463 Aluminum vs. S30815 Stainless Steel

6463 aluminum belongs to the aluminum alloys classification, while S30815 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 6463 aluminum and the bottom bar is S30815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 42 to 74
190
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 9.0 to 17
45
Fatigue Strength, MPa 45 to 76
320
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 86 to 150
480
Tensile Strength: Ultimate (UTS), MPa 140 to 230
680
Tensile Strength: Yield (Proof), MPa 82 to 200
350

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 160
1020
Melting Completion (Liquidus), °C 660
1400
Melting Onset (Solidus), °C 620
1360
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 190 to 210
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 55
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 170 to 180
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
17
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.3
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1190
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 25
260
Resilience: Unit (Modulus of Resilience), kJ/m3 50 to 300
310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 14 to 24
25
Strength to Weight: Bending, points 22 to 31
22
Thermal Diffusivity, mm2/s 79 to 86
4.0
Thermal Shock Resistance, points 6.3 to 10
15

Alloy Composition

Aluminum (Al), % 97.9 to 99.4
0
Carbon (C), % 0
0.050 to 0.1
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 0
20 to 22
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.15
62.8 to 68.4
Magnesium (Mg), % 0.45 to 0.9
0
Manganese (Mn), % 0 to 0.050
0 to 0.8
Nickel (Ni), % 0
10 to 12
Nitrogen (N), % 0
0.14 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.2 to 0.6
1.4 to 2.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.15
0