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3203 Aluminum vs. EN 1.4805 Stainless Steel

3203 aluminum belongs to the aluminum alloys classification, while EN 1.4805 stainless steel belongs to the iron alloys. There are 27 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 3203 aluminum and the bottom bar is EN 1.4805 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.5 to 29
9.0
Fatigue Strength, MPa 46 to 92
130
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 110 to 200
490
Tensile Strength: Yield (Proof), MPa 39 to 190
250

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 180
1000
Melting Completion (Liquidus), °C 650
1390
Melting Onset (Solidus), °C 620
1350
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 170
14
Thermal Expansion, µm/m-K 23
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
26
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.1
4.7
Embodied Energy, MJ/kg 150
66
Embodied Water, L/kg 1180
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.0 to 25
37
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 250
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 11 to 20
17
Strength to Weight: Bending, points 19 to 28
18
Thermal Diffusivity, mm2/s 70
3.7
Thermal Shock Resistance, points 4.9 to 8.8
11

Alloy Composition

Aluminum (Al), % 96.9 to 99
0
Carbon (C), % 0
0.2 to 0.5
Chromium (Cr), % 0
19 to 23
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.7
44.9 to 56.8
Manganese (Mn), % 1.0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
23 to 27
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.6
1.0 to 2.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0