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5088 Aluminum vs. ASTM A27 Cast Steel

5088 aluminum belongs to the aluminum alloys classification, while ASTM A27 cast steel belongs to the iron alloys. There are 29 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 5088 aluminum and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 29
25 to 27
Fatigue Strength, MPa 180
170 to 230
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
73
Tensile Strength: Ultimate (UTS), MPa 310
460 to 550
Tensile Strength: Yield (Proof), MPa 150
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 120
52
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 98
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 9.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1180
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 170
140 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 32
16 to 20
Strength to Weight: Bending, points 38
17 to 19
Thermal Diffusivity, mm2/s 51
14
Thermal Shock Resistance, points 14
15 to 18