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B535.0 Aluminum vs. ASTM A302 Alloy Steel

B535.0 aluminum belongs to the aluminum alloys classification, while ASTM A302 alloy steel belongs to the iron alloys. 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 B535.0 aluminum and the bottom bar is ASTM A302 alloy steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 65
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 66
190
Elongation at Break, % 10
20 to 23
Fatigue Strength, MPa 62
250 to 280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 25
73
Shear Strength, MPa 210
370 to 390
Tensile Strength: Ultimate (UTS), MPa 260
590 to 620
Tensile Strength: Yield (Proof), MPa 130
350 to 390

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
410
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 96
39 to 51
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.2 to 7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 82
8.2 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4 to 3.0
Density, g/cm3 2.6
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 9.4
1.5 to 1.6
Embodied Energy, MJ/kg 160
20 to 21
Embodied Water, L/kg 1180
48 to 50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
110 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 130
330 to 410
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
24
Strength to Weight: Axial, points 28
21 to 22
Strength to Weight: Bending, points 35
20 to 21
Thermal Diffusivity, mm2/s 40
10 to 14
Thermal Shock Resistance, points 11
17 to 18