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EN 1.4308 Stainless Steel vs. 7010 Aluminum

EN 1.4308 stainless steel belongs to the iron alloys classification, while 7010 aluminum belongs to the aluminum 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 EN 1.4308 stainless steel and the bottom bar is 7010 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
3.9 to 6.8
Fatigue Strength, MPa 160
160 to 190
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 510
520 to 590
Tensile Strength: Yield (Proof), MPa 200
410 to 540

Thermal Properties

Latent Heat of Fusion, J/g 290
380
Maximum Temperature: Mechanical, °C 960
200
Melting Completion (Liquidus), °C 1420
630
Melting Onset (Solidus), °C 1380
480
Specific Heat Capacity, J/kg-K 480
860
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 17
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
120

Otherwise Unclassified Properties

Base Metal Price, % relative 15
10
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 3.0
8.3
Embodied Energy, MJ/kg 43
150
Embodied Water, L/kg 150
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
22 to 33
Resilience: Unit (Modulus of Resilience), kJ/m3 100
1230 to 2130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 18
47 to 54
Strength to Weight: Bending, points 18
47 to 52
Thermal Diffusivity, mm2/s 4.1
58
Thermal Shock Resistance, points 11
22 to 26

Alloy Composition


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Aluminum (Al), % 0
87.9 to 90.6
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 18 to 20
0 to 0.050
Copper (Cu), % 0
1.5 to 2.0
Iron (Fe), % 65.9 to 74
0 to 0.15
Magnesium (Mg), % 0
2.1 to 2.6
Manganese (Mn), % 0 to 1.5
0 to 0.1
Nickel (Ni), % 8.0 to 11
0 to 0.050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.12
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 0
5.7 to 6.7
Zirconium (Zr), % 0
0.1 to 0.16
Residuals, % 0
0 to 0.15