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1200 Aluminum vs. ACI-ASTM CA6N Steel

1200 aluminum belongs to the aluminum alloys classification, while ACI-ASTM CA6N steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1200 aluminum and the bottom bar is ACI-ASTM CA6N steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 1.1 to 28
17
Fatigue Strength, MPa 25 to 69
640
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 85 to 180
1080
Tensile Strength: Yield (Proof), MPa 28 to 160
1060

Thermal Properties

Latent Heat of Fusion, J/g 400
280
Maximum Temperature: Mechanical, °C 170
740
Melting Completion (Liquidus), °C 660
1440
Melting Onset (Solidus), °C 650
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 230
23
Thermal Expansion, µm/m-K 23
9.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 58
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 190
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.5
Embodied Energy, MJ/kg 150
35
Embodied Water, L/kg 1190
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.0 to 19
180
Resilience: Unit (Modulus of Resilience), kJ/m3 5.7 to 180
2900
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 8.7 to 19
38
Strength to Weight: Bending, points 16 to 26
30
Thermal Diffusivity, mm2/s 92
6.1
Thermal Shock Resistance, points 3.8 to 8.1
40

Alloy Composition

Aluminum (Al), % 99 to 100
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
10.5 to 12.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 1.0
77.9 to 83.5
Manganese (Mn), % 0 to 0.050
0 to 0.5
Nickel (Ni), % 0
6.0 to 8.0
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0