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355.0 Aluminum vs. ASTM A302 Alloy Steel

355.0 aluminum belongs to the aluminum alloys classification, while ASTM A302 alloy 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 355.0 aluminum and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 72 to 83
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 1.5 to 2.6
20 to 23
Fatigue Strength, MPa 55 to 70
250 to 280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 150 to 240
370 to 390
Tensile Strength: Ultimate (UTS), MPa 200 to 260
590 to 620
Tensile Strength: Yield (Proof), MPa 150 to 190
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 470
250
Maximum Temperature: Mechanical, °C 180
410
Melting Completion (Liquidus), °C 620
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 150 to 170
39 to 51
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38 to 43
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 120 to 140
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4 to 3.0
Density, g/cm3 2.7
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 8.0
1.5 to 1.6
Embodied Energy, MJ/kg 150
20 to 21
Embodied Water, L/kg 1120
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 5.9
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 250
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 20 to 27
21 to 22
Strength to Weight: Bending, points 28 to 33
20 to 21
Thermal Diffusivity, mm2/s 60 to 69
10 to 14
Thermal Shock Resistance, points 9.1 to 12
17 to 18