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EN AC-71100 Aluminum vs. AISI 416 Stainless Steel

EN AC-71100 aluminum belongs to the aluminum alloys classification, while AISI 416 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 AISI 416 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
230 to 320
Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 1.1
13 to 31
Fatigue Strength, MPa 150
230 to 340
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 260
510 to 800
Tensile Strength: Yield (Proof), MPa 230
290 to 600

Thermal Properties

Latent Heat of Fusion, J/g 490
270
Maximum Temperature: Mechanical, °C 170
680
Melting Completion (Liquidus), °C 580
1530
Melting Onset (Solidus), °C 520
1480
Specific Heat Capacity, J/kg-K 860
480
Thermal Expansion, µm/m-K 22
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 97
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 7.4
1.9
Embodied Energy, MJ/kg 140
27
Embodied Water, L/kg 1010
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.8
98 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 360
220 to 940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 25
18 to 29
Strength to Weight: Bending, points 31
18 to 25
Thermal Shock Resistance, points 12
19 to 30

Alloy Composition

Aluminum (Al), % 78.7 to 83.3
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.3
83.2 to 87.9
Magnesium (Mg), % 0.2 to 0.5
0
Manganese (Mn), % 0 to 0.15
0 to 1.3
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 7.5 to 9.5
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 9.0 to 10.5
0
Residuals, % 0 to 0.15
0