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ASTM A209 Steel vs. 772.0 Aluminum

ASTM A209 steel belongs to the iron alloys classification, while 772.0 aluminum belongs to the aluminum alloys. There are 29 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 772.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 34
6.3 to 8.4
Fatigue Strength, MPa 180 to 200
94 to 160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 420 to 460
260 to 320
Tensile Strength: Yield (Proof), MPa 220 to 250
220 to 250

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1470
630
Melting Onset (Solidus), °C 1420 to 1430
580
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 50
150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
9.5
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 1.5
8.0
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 47
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
16 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 170
350 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 15 to 16
25 to 31
Strength to Weight: Bending, points 16 to 17
31 to 36
Thermal Diffusivity, mm2/s 13
58
Thermal Shock Resistance, points 12 to 14
11 to 14