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EN 1.3960 Stainless Steel vs. EN AC-51100 Aluminum

EN 1.3960 stainless steel belongs to the iron alloys classification, while EN AC-51100 aluminum belongs to the aluminum alloys. There are 29 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 EN 1.3960 stainless steel and the bottom bar is EN AC-51100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 34
4.5
Fatigue Strength, MPa 220
58
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
26
Tensile Strength: Ultimate (UTS), MPa 590
160
Tensile Strength: Yield (Proof), MPa 270
80

Thermal Properties

Latent Heat of Fusion, J/g 290
400
Maximum Temperature: Mechanical, °C 970
170
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1400
620
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
110

Otherwise Unclassified Properties

Base Metal Price, % relative 21
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 4.1
8.7
Embodied Energy, MJ/kg 57
150
Embodied Water, L/kg 160
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 190
47
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 21
17
Strength to Weight: Bending, points 20
25
Thermal Diffusivity, mm2/s 3.9
53
Thermal Shock Resistance, points 17
7.3

Alloy Composition

Aluminum (Al), % 0
94.5 to 97.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 60.2 to 67.9
0 to 0.55
Magnesium (Mg), % 0
2.5 to 3.5
Manganese (Mn), % 0 to 2.0
0 to 0.45
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 13 to 15
0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15