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S32950 Stainless Steel vs. EN AC-42000 Aluminum

S32950 stainless steel belongs to the iron alloys classification, while EN AC-42000 aluminum belongs to the aluminum alloys. There are 30 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 S32950 stainless steel and the bottom bar is EN AC-42000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
59 to 91
Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 17
1.1 to 2.4
Fatigue Strength, MPa 330
67 to 76
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 780
170 to 270
Tensile Strength: Yield (Proof), MPa 550
95 to 230

Thermal Properties

Latent Heat of Fusion, J/g 300
500
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1430
610
Melting Onset (Solidus), °C 1390
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 16
160
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 17
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 3.4
8.0
Embodied Energy, MJ/kg 47
150
Embodied Water, L/kg 180
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
2.8 to 5.7
Resilience: Unit (Modulus of Resilience), kJ/m3 730
64 to 370
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 28
18 to 28
Strength to Weight: Bending, points 24
26 to 35
Thermal Diffusivity, mm2/s 4.3
66
Thermal Shock Resistance, points 21
7.9 to 12

Alloy Composition

Aluminum (Al), % 0
89.9 to 93.3
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 26 to 29
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 60.3 to 69.4
0 to 0.55
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.2 to 0.65
Manganese (Mn), % 0 to 2.0
0 to 0.35
Molybdenum (Mo), % 1.0 to 2.5
0
Nickel (Ni), % 3.5 to 5.2
0 to 0.15
Nitrogen (N), % 0.15 to 0.35
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.6
6.5 to 7.5
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15