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EN 1.4028 Stainless Steel vs. 3003 Aluminum

EN 1.4028 stainless steel belongs to the iron alloys classification, while 3003 aluminum belongs to the aluminum 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 EN 1.4028 stainless steel and the bottom bar is 3003 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 11 to 17
1.1 to 28
Fatigue Strength, MPa 230 to 400
39 to 90
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 410 to 550
68 to 130
Tensile Strength: Ultimate (UTS), MPa 660 to 930
110 to 240
Tensile Strength: Yield (Proof), MPa 390 to 730
40 to 210

Thermal Properties

Latent Heat of Fusion, J/g 270
400
Maximum Temperature: Mechanical, °C 760
180
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1400
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 30
180
Thermal Expansion, µm/m-K 11
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
44
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
140

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 1.9
8.1
Embodied Energy, MJ/kg 27
150
Embodied Water, L/kg 100
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94 to 96
0.95 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
11 to 300
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24 to 33
11 to 24
Strength to Weight: Bending, points 22 to 27
18 to 30
Thermal Diffusivity, mm2/s 8.1
71
Thermal Shock Resistance, points 23 to 32
4.7 to 10

Alloy Composition

Aluminum (Al), % 0
96.8 to 99
Carbon (C), % 0.26 to 0.35
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
0.050 to 0.2
Iron (Fe), % 83.1 to 87.7
0 to 0.7
Manganese (Mn), % 0 to 1.5
1.0 to 1.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.6
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15

Comparable Variants