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S20910 Stainless Steel vs. EN AC-43500 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while EN AC-43500 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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-43500 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
68 to 91
Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 14 to 39
4.5 to 13
Fatigue Strength, MPa 310 to 460
62 to 100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 780 to 940
220 to 300
Tensile Strength: Yield (Proof), MPa 430 to 810
140 to 170

Thermal Properties

Latent Heat of Fusion, J/g 300
550
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1380
590
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 13
140
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.6
Embodied Carbon, kg CO2/kg material 4.8
7.8
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
12 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
130 to 200
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
54
Strength to Weight: Axial, points 28 to 33
24 to 33
Strength to Weight: Bending, points 24 to 27
32 to 39
Thermal Diffusivity, mm2/s 3.6
60
Thermal Shock Resistance, points 17 to 21
10 to 14

Alloy Composition

Aluminum (Al), % 0
86.4 to 90.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 52.1 to 62.1
0 to 0.25
Magnesium (Mg), % 0
0.1 to 0.6
Manganese (Mn), % 4.0 to 6.0
0.4 to 0.8
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
9.0 to 11.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.070
Residuals, % 0
0 to 0.15