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5070 Aluminum vs. ASTM A387 Grade 21L Class 1

5070 aluminum belongs to the aluminum alloys classification, while ASTM A387 grade 21L class 1 belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 A387 grade 21L class 1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 20
21
Fatigue Strength, MPa 150
160
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
74
Shear Strength, MPa 190
310
Tensile Strength: Ultimate (UTS), MPa 300
500
Tensile Strength: Yield (Proof), MPa 140
230

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 190
480
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
41
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 100
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.1
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.8
1.8
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1170
62

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
84
Resilience: Unit (Modulus of Resilience), kJ/m3 150
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 31
18
Strength to Weight: Bending, points 37
18
Thermal Diffusivity, mm2/s 53
11
Thermal Shock Resistance, points 14
14

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.3
2.8 to 3.3
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
94.4 to 96.1
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0