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EN AC-47000 Aluminum vs. AISI 440A Stainless Steel

EN AC-47000 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-47000 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, % 1.7
5.0 to 20
Fatigue Strength, MPa 68
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 97
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 570
280
Maximum Temperature: Mechanical, °C 170
760
Melting Completion (Liquidus), °C 590
1480
Melting Onset (Solidus), °C 570
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
23
Thermal Expansion, µm/m-K 21
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.2
Embodied Energy, MJ/kg 140
31
Embodied Water, L/kg 1040
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.5
87 to 120
Stiffness to Weight: Axial, points 16
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 19
26 to 65
Strength to Weight: Bending, points 27
23 to 43
Thermal Diffusivity, mm2/s 55
6.2
Thermal Shock Resistance, points 8.3
26 to 65

Alloy Composition

Aluminum (Al), % 82.1 to 89.5
0
Carbon (C), % 0
0.6 to 0.75
Chromium (Cr), % 0 to 0.1
16 to 18
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 0 to 0.8
78.4 to 83.4
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0 to 0.35
0
Manganese (Mn), % 0.050 to 0.55
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 10.5 to 13.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.55
0
Residuals, % 0 to 0.25
0