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B443.0 Aluminum vs. EN 1.4655 Stainless Steel

B443.0 aluminum belongs to the aluminum alloys classification, while EN 1.4655 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 B443.0 aluminum and the bottom bar is EN 1.4655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.9
23 to 25
Fatigue Strength, MPa 55
320
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
78
Shear Strength, MPa 110
460
Tensile Strength: Ultimate (UTS), MPa 150
720 to 730
Tensile Strength: Yield (Proof), MPa 50
450 to 480

Thermal Properties

Latent Heat of Fusion, J/g 470
290
Maximum Temperature: Mechanical, °C 170
1050
Melting Completion (Liquidus), °C 620
1420
Melting Onset (Solidus), °C 600
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.0
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1130
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.6
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 18
510 to 580
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 15
26
Strength to Weight: Bending, points 23
23
Thermal Diffusivity, mm2/s 61
4.0
Thermal Shock Resistance, points 6.8
20

Alloy Composition

Aluminum (Al), % 91.9 to 95.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 0 to 0.15
1.0 to 3.0
Iron (Fe), % 0 to 0.8
63.6 to 73.4
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 0
0.1 to 0.6
Nickel (Ni), % 0
3.5 to 5.5
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 4.5 to 6.0
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0