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ASTM A266 Carbon Steel vs. 5050 Aluminum

ASTM A266 carbon steel belongs to the iron alloys classification, while 5050 aluminum belongs to the aluminum alloys. There are 31 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 ASTM A266 carbon steel and the bottom bar is 5050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
36 to 68
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 21 to 26
1.7 to 22
Fatigue Strength, MPa 170 to 200
45 to 100
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 320 to 380
91 to 140
Tensile Strength: Ultimate (UTS), MPa 500 to 600
140 to 250
Tensile Strength: Yield (Proof), MPa 230 to 290
50 to 210

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
180
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
630
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 51 to 52
190
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
50
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
170

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.4
Embodied Energy, MJ/kg 18 to 19
150
Embodied Water, L/kg 46 to 47
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
4.1 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
18 to 330
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 18 to 21
15 to 26
Strength to Weight: Bending, points 18 to 20
22 to 33
Thermal Diffusivity, mm2/s 14
79
Thermal Shock Resistance, points 16 to 19
6.3 to 11