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5042 Aluminum vs. S30615 Stainless Steel

5042 aluminum belongs to the aluminum alloys classification, while S30615 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 5042 aluminum and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 3.4
39
Fatigue Strength, MPa 97 to 120
270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 200
470
Tensile Strength: Ultimate (UTS), MPa 340 to 360
690
Tensile Strength: Yield (Proof), MPa 270 to 310
310

Thermal Properties

Latent Heat of Fusion, J/g 400
340
Maximum Temperature: Mechanical, °C 180
960
Melting Completion (Liquidus), °C 640
1370
Melting Onset (Solidus), °C 570
1320
Specific Heat Capacity, J/kg-K 900
500
Thermal Conductivity, W/m-K 130
14
Thermal Expansion, µm/m-K 24
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 8.8
3.7
Embodied Energy, MJ/kg 150
53
Embodied Water, L/kg 1180
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
220
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 35 to 37
25
Strength to Weight: Bending, points 40 to 42
23
Thermal Diffusivity, mm2/s 53
3.7
Thermal Shock Resistance, points 15 to 16
16

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
0.8 to 1.5
Carbon (C), % 0
0.16 to 0.24
Chromium (Cr), % 0 to 0.1
17 to 19.5
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.35
56.7 to 65.3
Magnesium (Mg), % 3.0 to 4.0
0
Manganese (Mn), % 0.2 to 0.5
0 to 2.0
Nickel (Ni), % 0
13.5 to 16
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
3.2 to 4.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0