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5070 Aluminum vs. EN 1.4901 Stainless Steel

5070 aluminum belongs to the aluminum alloys classification, while EN 1.4901 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 5070 aluminum and the bottom bar is EN 1.4901 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 20
19
Fatigue Strength, MPa 150
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 190
460
Tensile Strength: Ultimate (UTS), MPa 300
740
Tensile Strength: Yield (Proof), MPa 140
490

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 190
650
Melting Completion (Liquidus), °C 640
1490
Melting Onset (Solidus), °C 550
1450
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
26
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 100
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.8
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1170
89

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
620
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 31
26
Strength to Weight: Bending, points 37
23
Thermal Diffusivity, mm2/s 53
6.9
Thermal Shock Resistance, points 14
23

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0 to 0.020
Boron (B), % 0
0.0010 to 0.0060
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0 to 0.3
8.5 to 9.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
85.8 to 89.1
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0
0.3 to 0.6
Nickel (Ni), % 0
0 to 0.4
Niobium (Nb), % 0
0.040 to 0.090
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.15
0 to 0.010
Tungsten (W), % 0
1.5 to 2.0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 0.4 to 0.8
0
Zirconium (Zr), % 0
0 to 0.010
Residuals, % 0 to 0.15
0