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3303 Aluminum vs. EN 1.4557 Stainless Steel

3303 aluminum belongs to the aluminum alloys classification, while EN 1.4557 stainless steel belongs to the iron alloys. There are 29 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 3303 aluminum and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 43
260
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 110
560
Tensile Strength: Yield (Proof), MPa 39
300

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
1090
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 620
1420
Specific Heat Capacity, J/kg-K 900
460
Thermal Conductivity, W/m-K 170
15
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
29
Density, g/cm3 2.8
8.0
Embodied Carbon, kg CO2/kg material 8.1
5.6
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 1180
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
190
Resilience: Unit (Modulus of Resilience), kJ/m3 11
210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 18
19
Thermal Diffusivity, mm2/s 67
4.0
Thermal Shock Resistance, points 4.8
12

Alloy Composition

Aluminum (Al), % 96.6 to 99
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0.050 to 0.2
0.5 to 1.0
Iron (Fe), % 0 to 0.7
49.5 to 56.3
Manganese (Mn), % 1.0 to 1.5
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0