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ASTM A204 Steel vs. 308.0 Aluminum

ASTM A204 steel belongs to the iron alloys classification, while 308.0 aluminum belongs to the aluminum 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 ASTM A204 steel and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
70
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 18 to 22
2.0
Fatigue Strength, MPa 200 to 220
89
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 330 to 360
150
Tensile Strength: Ultimate (UTS), MPa 520 to 590
190
Tensile Strength: Yield (Proof), MPa 290 to 330
110

Thermal Properties

Latent Heat of Fusion, J/g 250
470
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1470
620
Melting Onset (Solidus), °C 1420 to 1430
540
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 52
140
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
10
Density, g/cm3 7.9
2.9
Embodied Carbon, kg CO2/kg material 1.5
7.7
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 47
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 95
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 290
83
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
47
Strength to Weight: Axial, points 18 to 21
18
Strength to Weight: Bending, points 18 to 20
25
Thermal Diffusivity, mm2/s 14
55
Thermal Shock Resistance, points 15 to 17
9.2