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ACI-ASTM CF3MN Steel vs. AM60B Magnesium

ACI-ASTM CF3MN 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 CF3MN steel and the bottom bar is AM60B magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
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 78
17
Tensile Strength: Ultimate (UTS), MPa 580
230
Tensile Strength: Yield (Proof), MPa 290
130

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1010
120
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1390
540
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 15
61
Thermal Expansion, µm/m-K 16
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
13
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
72

Otherwise Unclassified Properties

Base Metal Price, % relative 19
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 3.9
23
Embodied Energy, MJ/kg 53
160
Embodied Water, L/kg 160
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
21
Resilience: Unit (Modulus of Resilience), kJ/m3 210
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 20
38
Strength to Weight: Bending, points 20
50
Thermal Diffusivity, mm2/s 4.1
37
Thermal Shock Resistance, points 13
14

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 22
0
Copper (Cu), % 0
0 to 0.010
Iron (Fe), % 58.7 to 71.9
0 to 0.0050
Magnesium (Mg), % 0
92.6 to 94.3
Manganese (Mn), % 0 to 1.5
0.24 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 9.0 to 13
0 to 0.0020
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.22