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EN 1.3975 Stainless Steel vs. EN AC-71100 Aluminum

EN 1.3975 stainless steel belongs to the iron alloys classification, while EN AC-71100 aluminum belongs to the aluminum alloys. There are 26 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 1.3975 stainless steel and the bottom bar is EN AC-71100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
110
Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 27
1.1
Fatigue Strength, MPa 230
150
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 660
260
Tensile Strength: Yield (Proof), MPa 320
230

Thermal Properties

Latent Heat of Fusion, J/g 340
490
Maximum Temperature: Mechanical, °C 910
170
Melting Completion (Liquidus), °C 1360
580
Melting Onset (Solidus), °C 1320
520
Specific Heat Capacity, J/kg-K 500
860
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.5
2.9
Embodied Carbon, kg CO2/kg material 3.3
7.4
Embodied Energy, MJ/kg 47
140
Embodied Water, L/kg 150
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
2.8
Resilience: Unit (Modulus of Resilience), kJ/m3 270
360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
47
Strength to Weight: Axial, points 24
25
Strength to Weight: Bending, points 22
31
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0
78.7 to 83.3
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 58.2 to 65.4
0 to 0.3
Magnesium (Mg), % 0
0.2 to 0.5
Manganese (Mn), % 7.0 to 9.0
0 to 0.15
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 8.0 to 9.0
0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 3.5 to 4.5
7.5 to 9.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
9.0 to 10.5
Residuals, % 0
0 to 0.15