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EN AC-51500 Aluminum vs. AISI 440B Stainless Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while AISI 440B 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-51500 aluminum and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
3.0 to 18
Fatigue Strength, MPa 120
260 to 850
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 280
740 to 1930
Tensile Strength: Yield (Proof), MPa 160
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 430
280
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 630
1480
Melting Onset (Solidus), °C 590
1370
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
23
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 88
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 9.0
2.2
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
57 to 110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
27 to 70
Strength to Weight: Bending, points 36
24 to 45
Thermal Diffusivity, mm2/s 49
6.1
Thermal Shock Resistance, points 13
27 to 70

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0.75 to 1.0
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
78.2 to 83.3
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.6
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0