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ACI-ASTM CK3MCuN Steel vs. AM60B Magnesium

ACI-ASTM CK3MCuN steel belongs to the iron alloys classification, while AM60B magnesium belongs to the magnesium alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 AM60B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
62
Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 39
11
Fatigue Strength, MPa 250
96
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
17
Tensile Strength: Ultimate (UTS), MPa 620
230
Tensile Strength: Yield (Proof), MPa 290
130

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1090
120
Melting Completion (Liquidus), °C 1460
620
Melting Onset (Solidus), °C 1350
540
Specific Heat Capacity, J/kg-K 460
1000
Thermal Conductivity, W/m-K 12
61
Thermal Expansion, µm/m-K 16
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
13
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
72

Otherwise Unclassified Properties

Base Metal Price, % relative 29
12
Density, g/cm3 8.0
1.7
Embodied Carbon, kg CO2/kg material 5.6
23
Embodied Energy, MJ/kg 76
160
Embodied Water, L/kg 190
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
21
Resilience: Unit (Modulus of Resilience), kJ/m3 210
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
71
Strength to Weight: Axial, points 21
38
Strength to Weight: Bending, points 20
50
Thermal Diffusivity, mm2/s 3.2
37
Thermal Shock Resistance, points 14
14

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.025
0
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
0 to 0.010
Iron (Fe), % 49.5 to 56.3
0 to 0.0050
Magnesium (Mg), % 0
92.6 to 94.3
Manganese (Mn), % 0 to 1.2
0.24 to 0.6
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0 to 0.0020
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0 to 0.22