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ACI-ASTM CA6NM Steel vs. 1230A Aluminum

ACI-ASTM CA6NM steel belongs to the iron alloys classification, while 1230A aluminum belongs to the aluminum 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 ACI-ASTM CA6NM steel and the bottom bar is 1230A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 17
4.5 to 34
Fatigue Strength, MPa 380
35 to 74
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 850
89 to 170
Tensile Strength: Yield (Proof), MPa 620
29 to 150

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 770
170
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
640
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 25
230
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
60
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
200

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.0
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 2.5
8.2
Embodied Energy, MJ/kg 34
150
Embodied Water, L/kg 110
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
6.4 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
5.9 to 150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 30
9.1 to 17
Strength to Weight: Bending, points 26
16 to 25
Thermal Diffusivity, mm2/s 6.7
93
Thermal Shock Resistance, points 31
4.0 to 7.6

Alloy Composition

Aluminum (Al), % 0
99.3 to 100
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 11.5 to 14
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 78.4 to 84.6
0 to 0.7
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 1.0
0 to 0.050
Molybdenum (Mo), % 0.4 to 1.0
0
Nickel (Ni), % 3.5 to 4.5
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.050