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ASTM A209 Steel vs. 328.0 Aluminum

ASTM A209 steel belongs to the iron alloys classification, while 328.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 A209 steel and the bottom bar is 328.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 150
60 to 82
Elastic (Young's, Tensile) Modulus, GPa 190
72
Elongation at Break, % 34
1.6 to 2.1
Fatigue Strength, MPa 180 to 200
55 to 80
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 420 to 460
200 to 270
Tensile Strength: Yield (Proof), MPa 220 to 250
120 to 170

Thermal Properties

Latent Heat of Fusion, J/g 250
510
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1470
620
Melting Onset (Solidus), °C 1420 to 1430
560
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 50
120
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
30
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
99

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
10
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.5
7.8
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 47
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
2.8 to 5.0
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 170
92 to 200
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 15 to 16
21 to 28
Strength to Weight: Bending, points 16 to 17
28 to 34
Thermal Diffusivity, mm2/s 13
50
Thermal Shock Resistance, points 12 to 14
9.2 to 12