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EN AC-71100 Aluminum vs. S17600 Stainless Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while S17600 stainless steel belongs to the iron alloys. There are 28 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 S17600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
270 to 410
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.1
8.6 to 11
Fatigue Strength, MPa 150
300 to 680
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 260
940 to 1490
Tensile Strength: Yield (Proof), MPa 230
580 to 1310

Thermal Properties

Latent Heat of Fusion, J/g 490
290
Maximum Temperature: Mechanical, °C 170
890
Melting Completion (Liquidus), °C 580
1430
Melting Onset (Solidus), °C 520
1390
Specific Heat Capacity, J/kg-K 860
480
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 97
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 7.4
2.9
Embodied Energy, MJ/kg 140
42
Embodied Water, L/kg 1010
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
70 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
850 to 4390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 25
34 to 54
Strength to Weight: Bending, points 31
28 to 37
Thermal Shock Resistance, points 12
31 to 50

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0 to 0.4
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
16 to 17.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
71.3 to 77.6
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Nickel (Ni), % 0
6.0 to 7.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 7.5 to 9.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0.4 to 1.2
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0