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2030 Aluminum vs. EN 1.4031 Stainless Steel

2030 aluminum belongs to the aluminum alloys classification, while EN 1.4031 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 2030 aluminum and the bottom bar is EN 1.4031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 5.6 to 8.0
11 to 13
Fatigue Strength, MPa 91 to 110
220 to 400
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 220 to 250
400 to 540
Tensile Strength: Ultimate (UTS), MPa 370 to 420
670 to 900
Tensile Strength: Yield (Proof), MPa 240 to 270
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 190
770
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 510
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 130
30
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 99
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 3.1
7.7
Embodied Carbon, kg CO2/kg material 8.0
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 1140
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
77 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 530
380 to 1360
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 33 to 38
24 to 32
Strength to Weight: Bending, points 37 to 40
22 to 27
Thermal Diffusivity, mm2/s 50
8.1
Thermal Shock Resistance, points 16 to 19
23 to 32

Alloy Composition

Aluminum (Al), % 88.9 to 95.2
0
Bismuth (Bi), % 0 to 0.2
0
Carbon (C), % 0
0.36 to 0.42
Chromium (Cr), % 0 to 0.1
12.5 to 14.5
Copper (Cu), % 3.3 to 4.5
0
Iron (Fe), % 0 to 0.7
83 to 87.1
Lead (Pb), % 0.8 to 1.5
0
Magnesium (Mg), % 0.5 to 1.3
0
Manganese (Mn), % 0.2 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.3
0