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EN AC-45000 Aluminum vs. AISI 440A Stainless Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while AISI 440A 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-45000 aluminum and the bottom bar is AISI 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.1
5.0 to 20
Fatigue Strength, MPa 75
270 to 790
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Tensile Strength: Ultimate (UTS), MPa 180
730 to 1790
Tensile Strength: Yield (Proof), MPa 110
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 470
280
Maximum Temperature: Mechanical, °C 180
760
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 520
1370
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 120
23
Thermal Expansion, µm/m-K 22
10

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
9.0
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.2
Embodied Energy, MJ/kg 140
31
Embodied Water, L/kg 1070
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7
87 to 120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 17
26 to 65
Strength to Weight: Bending, points 24
23 to 43
Thermal Diffusivity, mm2/s 47
6.2
Thermal Shock Resistance, points 8.0
26 to 65

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
0.6 to 0.75
Chromium (Cr), % 0 to 0.15
16 to 18
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 0 to 1.0
78.4 to 83.4
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
0 to 0.75
Nickel (Ni), % 0 to 0.45
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 5.0 to 7.0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0