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3003 Aluminum vs. EN 1.4378 Stainless Steel

3003 aluminum belongs to the aluminum alloys classification, while EN 1.4378 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (7, 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 3003 aluminum and the bottom bar is EN 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 28 to 65
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 28
14 to 34
Fatigue Strength, MPa 39 to 90
340 to 550
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 68 to 130
510 to 680
Tensile Strength: Ultimate (UTS), MPa 110 to 240
760 to 1130
Tensile Strength: Yield (Proof), MPa 40 to 210
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 180
910
Melting Completion (Liquidus), °C 650
1390
Melting Onset (Solidus), °C 640
1350
Specific Heat Capacity, J/kg-K 900
480
Thermal Expansion, µm/m-K 23
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
7.6
Embodied Carbon, kg CO2/kg material 8.1
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1180
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 0.95 to 63
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 300
470 to 2370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 11 to 24
28 to 41
Strength to Weight: Bending, points 18 to 30
24 to 31
Thermal Shock Resistance, points 4.7 to 10
16 to 23

Alloy Composition

Aluminum (Al), % 96.8 to 99
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.050 to 0.2
0
Iron (Fe), % 0 to 0.7
61.2 to 69
Manganese (Mn), % 1.0 to 1.5
11.5 to 14.5
Nickel (Ni), % 0
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0