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5049 Aluminum vs. ASTM A209 Steel

5049 aluminum belongs to the aluminum alloys classification, while ASTM A209 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 5049 aluminum and the bottom bar is ASTM A209 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 52 to 88
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 2.0 to 18
34
Fatigue Strength, MPa 79 to 130
180 to 200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 130 to 190
280 to 310
Tensile Strength: Ultimate (UTS), MPa 210 to 330
420 to 460
Tensile Strength: Yield (Proof), MPa 91 to 280
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 190
410
Melting Completion (Liquidus), °C 650
1470
Melting Onset (Solidus), °C 620
1420 to 1430
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
50
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.1 to 8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.5
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1180
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.0 to 31
120 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 59 to 570
130 to 170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 22 to 34
15 to 16
Strength to Weight: Bending, points 29 to 39
16 to 17
Thermal Diffusivity, mm2/s 56
13
Thermal Shock Resistance, points 9.3 to 15
12 to 14