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S20910 Stainless Steel vs. EN AC-45300 Aluminum

S20910 stainless steel belongs to the iron alloys classification, while EN AC-45300 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-45300 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
94 to 120
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 14 to 39
1.0 to 2.8
Fatigue Strength, MPa 310 to 460
59 to 72
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 780 to 940
220 to 290
Tensile Strength: Yield (Proof), MPa 430 to 810
150 to 230

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1080
170
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1380
590
Specific Heat Capacity, J/kg-K 480
890
Thermal Conductivity, W/m-K 13
150
Thermal Expansion, µm/m-K 16
22

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 4.8
8.0
Embodied Energy, MJ/kg 68
150
Embodied Water, L/kg 180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
2.7 to 5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
160 to 390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 28 to 33
23 to 29
Strength to Weight: Bending, points 24 to 27
30 to 35
Thermal Diffusivity, mm2/s 3.6
60
Thermal Shock Resistance, points 17 to 21
10 to 13

Alloy Composition

Aluminum (Al), % 0
90.2 to 94.2
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 20.5 to 23.5
0
Copper (Cu), % 0
1.0 to 1.5
Iron (Fe), % 52.1 to 62.1
0 to 0.65
Lead (Pb), % 0
0 to 0.15
Magnesium (Mg), % 0
0.35 to 0.65
Manganese (Mn), % 4.0 to 6.0
0 to 0.55
Molybdenum (Mo), % 1.5 to 3.0
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.25
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
4.5 to 5.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0 to 0.25
Vanadium (V), % 0.1 to 0.3
0
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15