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S20910 Stainless Steel vs. EN AC-71100 Aluminum

S20910 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 (8, 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 S20910 stainless steel and the bottom bar is EN AC-71100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
110
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 14 to 39
1.1
Fatigue Strength, MPa 310 to 460
150
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 780 to 940
260
Tensile Strength: Yield (Proof), MPa 430 to 810
230

Thermal Properties

Latent Heat of Fusion, J/g 300
490
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
580
Melting Onset (Solidus), °C 1380
520
Specific Heat Capacity, J/kg-K 480
860
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.9
Embodied Carbon, kg CO2/kg material 4.8
7.4
Embodied Energy, MJ/kg 68
140
Embodied Water, L/kg 180
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
2.8
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
360
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
47
Strength to Weight: Axial, points 28 to 33
25
Strength to Weight: Bending, points 24 to 27
31
Thermal Shock Resistance, points 17 to 21
12

Alloy Composition

Aluminum (Al), % 0
78.7 to 83.3
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 52.1 to 62.1
0 to 0.3
Magnesium (Mg), % 0
0.2 to 0.5
Manganese (Mn), % 4.0 to 6.0
0 to 0.15
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.75
7.5 to 9.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.15
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
9.0 to 10.5
Residuals, % 0
0 to 0.15