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EN AC-45000 Aluminum vs. S44660 Stainless Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while S44660 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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-45000 aluminum and the bottom bar is S44660 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77
210
Elastic (Young's, Tensile) Modulus, GPa 73
210
Elongation at Break, % 1.1
20
Fatigue Strength, MPa 75
330
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
81
Tensile Strength: Ultimate (UTS), MPa 180
660
Tensile Strength: Yield (Proof), MPa 110
510

Thermal Properties

Latent Heat of Fusion, J/g 470
300
Maximum Temperature: Mechanical, °C 180
1100
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 120
17
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 81
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
21
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 7.7
4.3
Embodied Energy, MJ/kg 140
61
Embodied Water, L/kg 1070
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
120
Resilience: Unit (Modulus of Resilience), kJ/m3 80
640
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 17
24
Strength to Weight: Bending, points 24
22
Thermal Diffusivity, mm2/s 47
4.5
Thermal Shock Resistance, points 8.0
21

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.15
25 to 28
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
60.4 to 71
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0 to 1.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 0 to 0.45
1.0 to 3.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 5.0 to 7.0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0.2 to 1.0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0