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ASTM A204 Steel vs. C443.0 Aluminum

ASTM A204 steel belongs to the iron alloys classification, while C443.0 aluminum belongs to the aluminum 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 ASTM A204 steel and the bottom bar is C443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160 to 180
65
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 18 to 22
9.0
Fatigue Strength, MPa 200 to 220
120
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 330 to 360
130
Tensile Strength: Ultimate (UTS), MPa 520 to 590
230
Tensile Strength: Yield (Proof), MPa 290 to 330
100

Thermal Properties

Latent Heat of Fusion, J/g 250
470
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1470
630
Melting Onset (Solidus), °C 1420 to 1430
600
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
140
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
37
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.5
7.9
Embodied Energy, MJ/kg 20
150
Embodied Water, L/kg 47
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 95
17
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 290
70
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 18 to 21
24
Strength to Weight: Bending, points 18 to 20
31
Thermal Diffusivity, mm2/s 14
58
Thermal Shock Resistance, points 15 to 17
10