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2007 Aluminum vs. EN 1.4423 Stainless Steel

2007 aluminum belongs to the aluminum alloys classification, while EN 1.4423 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 2007 aluminum and the bottom bar is EN 1.4423 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 5.6 to 8.0
17
Fatigue Strength, MPa 91 to 110
380
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
77
Shear Strength, MPa 220 to 250
520
Tensile Strength: Ultimate (UTS), MPa 370 to 420
850
Tensile Strength: Yield (Proof), MPa 240 to 270
630

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 190
780
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 510
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 23
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 11
14
Density, g/cm3 3.1
7.9
Embodied Carbon, kg CO2/kg material 8.0
3.2
Embodied Energy, MJ/kg 150
43
Embodied Water, L/kg 1130
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 26
130
Resilience: Unit (Modulus of Resilience), kJ/m3 390 to 530
1000
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 44
25
Strength to Weight: Axial, points 33 to 38
30
Strength to Weight: Bending, points 37 to 40
25
Thermal Diffusivity, mm2/s 48
4.3
Thermal Shock Resistance, points 16 to 19
31

Alloy Composition

Aluminum (Al), % 87.5 to 95
0
Bismuth (Bi), % 0 to 0.2
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0 to 0.1
11 to 13
Copper (Cu), % 3.3 to 4.6
0.2 to 0.8
Iron (Fe), % 0 to 0.8
73.8 to 80.5
Lead (Pb), % 0.8 to 1.5
0
Magnesium (Mg), % 0.4 to 1.8
0
Manganese (Mn), % 0.5 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
2.3 to 2.8
Nickel (Ni), % 0 to 0.2
6.0 to 7.0
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 0.5
Sulfur (S), % 0
0 to 0.0030
Tin (Sn), % 0 to 0.2
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.8
0
Residuals, % 0 to 0.3
0