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5070 Aluminum vs. ASTM A356 Grade 8

5070 aluminum belongs to the aluminum alloys classification, while ASTM A356 grade 8 belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 20
21
Fatigue Strength, MPa 150
270
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 300
630
Tensile Strength: Yield (Proof), MPa 140
390

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 190
440
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 550
1430
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
38
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.5
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
2.0
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1170
55

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 31
22
Strength to Weight: Bending, points 37
21
Thermal Diffusivity, mm2/s 53
10
Thermal Shock Resistance, points 14
18

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0 to 0.3
1.0 to 1.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
95.4 to 97.4
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.25
0.2 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0.050 to 0.15
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0