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5049 Aluminum vs. S64512 Stainless Steel

5049 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 5049 aluminum and the bottom bar is S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 52 to 88
330
Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.0 to 18
17
Fatigue Strength, MPa 79 to 130
540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 130 to 190
700
Tensile Strength: Ultimate (UTS), MPa 210 to 330
1140
Tensile Strength: Yield (Proof), MPa 91 to 280
890

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
750
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
28
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 110
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.5
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0 to 31
180
Resilience: Unit (Modulus of Resilience), kJ/m3 59 to 570
2020
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 22 to 34
40
Strength to Weight: Bending, points 29 to 39
31
Thermal Diffusivity, mm2/s 56
7.5
Thermal Shock Resistance, points 9.3 to 15
42

Alloy Composition

Aluminum (Al), % 94.7 to 97.9
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0 to 0.3
11 to 12.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
80.6 to 84.7
Magnesium (Mg), % 1.6 to 2.5
0
Manganese (Mn), % 0.5 to 1.1
0.5 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.35
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0