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710.0 Aluminum vs. ASTM A321 Carbon Steel

710.0 aluminum belongs to the aluminum alloys classification, while ASTM A321 carbon steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 710.0 aluminum and the bottom bar is ASTM A321 carbon steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
190
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 2.2 to 3.6
21
Fatigue Strength, MPa 55 to 110
270
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 180
420
Tensile Strength: Ultimate (UTS), MPa 240 to 250
670
Tensile Strength: Yield (Proof), MPa 160
390

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140
51
Thermal Expansion, µm/m-K 24
12

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1130
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.9 to 7.9
120
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 190
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 23
24
Strength to Weight: Bending, points 29
22
Thermal Diffusivity, mm2/s 53
14
Thermal Shock Resistance, points 10 to 11
21

Alloy Composition

Aluminum (Al), % 90.5 to 93.1
0
Carbon (C), % 0
0 to 0.55
Copper (Cu), % 0.35 to 0.65
0
Iron (Fe), % 0 to 0.5
98.1 to 99.25
Magnesium (Mg), % 0.6 to 0.8
0
Manganese (Mn), % 0 to 0.050
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.15
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 6.0 to 7.0
0
Residuals, % 0 to 0.15
0