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ACI-ASTM CK3MCuN Steel vs. 6063 Aluminum

ACI-ASTM CK3MCuN steel belongs to the iron alloys classification, while 6063 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 CK3MCuN steel and the bottom bar is 6063 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
25 to 95
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 39
7.3 to 21
Fatigue Strength, MPa 250
39 to 95
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 620
110 to 300
Tensile Strength: Yield (Proof), MPa 290
49 to 270

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1090
160
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1350
620
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 12
190 to 220
Thermal Expansion, µm/m-K 16
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
49 to 58
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
160 to 190

Otherwise Unclassified Properties

Base Metal Price, % relative 29
9.5
Density, g/cm3 8.0
2.7
Embodied Carbon, kg CO2/kg material 5.6
8.3
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 190
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
13 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 210
18 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 21
11 to 31
Strength to Weight: Bending, points 20
18 to 37
Thermal Diffusivity, mm2/s 3.2
79 to 89
Thermal Shock Resistance, points 14
4.8 to 13

Alloy Composition

Aluminum (Al), % 0
97.5 to 99.4
Carbon (C), % 0 to 0.025
0
Chromium (Cr), % 19.5 to 20.5
0 to 0.1
Copper (Cu), % 0.5 to 1.0
0 to 0.1
Iron (Fe), % 49.5 to 56.3
0 to 0.35
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0 to 1.2
0 to 0.1
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0.2 to 0.6
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15