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5182 Aluminum vs. ASTM A387 Grade 21L Class 1

5182 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 5182 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, % 1.1 to 12
21
Fatigue Strength, MPa 100 to 130
160
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
74
Shear Strength, MPa 170 to 240
310
Tensile Strength: Ultimate (UTS), MPa 280 to 420
500
Tensile Strength: Yield (Proof), MPa 130 to 360
230

Thermal Properties

Latent Heat of Fusion, J/g 390
260
Maximum Temperature: Mechanical, °C 180
480
Melting Completion (Liquidus), °C 640
1470
Melting Onset (Solidus), °C 590
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 28
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 94
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 8.9
1.8
Embodied Energy, MJ/kg 150
23
Embodied Water, L/kg 1180
62

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.6 to 49
84
Resilience: Unit (Modulus of Resilience), kJ/m3 120 to 950
140
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 29 to 44
18
Strength to Weight: Bending, points 36 to 47
18
Thermal Diffusivity, mm2/s 53
11
Thermal Shock Resistance, points 12 to 19
14

Alloy Composition

Aluminum (Al), % 93.2 to 95.8
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0 to 0.1
2.8 to 3.3
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 0.35
94.4 to 96.1
Magnesium (Mg), % 4.0 to 5.0
0
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.2
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0