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707.0 Aluminum vs. EN 1.4523 Stainless Steel

707.0 aluminum belongs to the aluminum alloys classification, while EN 1.4523 stainless steel belongs to the iron 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 707.0 aluminum and the bottom bar is EN 1.4523 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.7 to 3.4
17
Fatigue Strength, MPa 75 to 140
190
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 270 to 300
520
Tensile Strength: Yield (Proof), MPa 170 to 250
320

Thermal Properties

Latent Heat of Fusion, J/g 380
290
Maximum Temperature: Mechanical, °C 180
920
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
22
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1140
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3 to 8.6
77
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 26 to 29
18
Strength to Weight: Bending, points 32 to 34
18
Thermal Diffusivity, mm2/s 58
5.8
Thermal Shock Resistance, points 12 to 13
18

Alloy Composition

Aluminum (Al), % 90.5 to 93.6
0 to 0.040
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0.2 to 0.4
17.5 to 19
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.8
75.7 to 80.2
Magnesium (Mg), % 1.8 to 2.4
0
Manganese (Mn), % 0.4 to 0.6
0 to 0.5
Molybdenum (Mo), % 0
2.0 to 2.5
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
Titanium (Ti), % 0 to 0.25
0.15 to 0.8
Zinc (Zn), % 4.0 to 4.5
0
Residuals, % 0 to 0.15
0