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EN AC-71100 Aluminum vs. EN 1.4905 Stainless Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while EN 1.4905 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 AC-71100 aluminum and the bottom bar is EN 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
19
Fatigue Strength, MPa 150
330
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 260
740
Tensile Strength: Yield (Proof), MPa 230
510

Thermal Properties

Latent Heat of Fusion, J/g 490
270
Maximum Temperature: Mechanical, °C 170
660
Melting Completion (Liquidus), °C 580
1480
Melting Onset (Solidus), °C 520
1440
Specific Heat Capacity, J/kg-K 860
470
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 97
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.9
7.9
Embodied Carbon, kg CO2/kg material 7.4
2.8
Embodied Energy, MJ/kg 140
40
Embodied Water, L/kg 1010
90

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
130
Resilience: Unit (Modulus of Resilience), kJ/m3 360
680
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 25
26
Strength to Weight: Bending, points 31
23
Thermal Shock Resistance, points 12
25

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0 to 0.040
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 0
0.090 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
86.2 to 88.8
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.050 to 0.090
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 7.5 to 9.5
0.1 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0