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EN AC-47000 Aluminum vs. AISI 446 Stainless Steel

EN AC-47000 aluminum belongs to the aluminum alloys classification, while AISI 446 stainless steel belongs to the iron alloys. There are 30 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 EN AC-47000 aluminum and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
190
Elastic (Young's, Tensile) Modulus, GPa 73
200
Elongation at Break, % 1.7
23
Fatigue Strength, MPa 68
200
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 180
570
Tensile Strength: Yield (Proof), MPa 97
300

Thermal Properties

Latent Heat of Fusion, J/g 570
290
Maximum Temperature: Mechanical, °C 170
1180
Melting Completion (Liquidus), °C 590
1510
Melting Onset (Solidus), °C 570
1430
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 130
17
Thermal Expansion, µm/m-K 21
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 7.7
2.4
Embodied Energy, MJ/kg 140
35
Embodied Water, L/kg 1040
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.5
110
Resilience: Unit (Modulus of Resilience), kJ/m3 65
230
Stiffness to Weight: Axial, points 16
15
Stiffness to Weight: Bending, points 54
26
Strength to Weight: Axial, points 19
21
Strength to Weight: Bending, points 27
20
Thermal Diffusivity, mm2/s 55
4.6
Thermal Shock Resistance, points 8.3
19

Alloy Composition

Aluminum (Al), % 82.1 to 89.5
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.1
23 to 27
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 0 to 0.8
69.2 to 77
Lead (Pb), % 0 to 0.2
0
Magnesium (Mg), % 0 to 0.35
0
Manganese (Mn), % 0.050 to 0.55
0 to 1.5
Nickel (Ni), % 0 to 0.3
0 to 0.75
Nitrogen (N), % 0
0 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 10.5 to 13.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
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