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ACI-ASTM CA6N Steel vs. AM60A Magnesium

ACI-ASTM CA6N steel belongs to the iron alloys classification, while AM60A magnesium belongs to the magnesium 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 CA6N steel and the bottom bar is AM60A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 17
8.8
Fatigue Strength, MPa 640
70
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
18
Tensile Strength: Ultimate (UTS), MPa 1080
230
Tensile Strength: Yield (Proof), MPa 1060
130

Thermal Properties

Latent Heat of Fusion, J/g 280
350
Maximum Temperature: Mechanical, °C 740
120
Melting Completion (Liquidus), °C 1440
620
Melting Onset (Solidus), °C 1400
550
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 23
62
Thermal Expansion, µm/m-K 9.9
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
13
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
69

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 2.5
23
Embodied Energy, MJ/kg 35
160
Embodied Water, L/kg 110
990

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
17
Resilience: Unit (Modulus of Resilience), kJ/m3 2900
190
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
71
Strength to Weight: Axial, points 38
37
Strength to Weight: Bending, points 30
49
Thermal Diffusivity, mm2/s 6.1
37
Thermal Shock Resistance, points 40
14

Alloy Composition

Aluminum (Al), % 0
5.5 to 6.5
Carbon (C), % 0 to 0.060
0
Chromium (Cr), % 10.5 to 12.5
0
Copper (Cu), % 0
0 to 0.35
Iron (Fe), % 77.9 to 83.5
0
Magnesium (Mg), % 0
91.8 to 94.4
Manganese (Mn), % 0 to 0.5
0.13 to 0.6
Nickel (Ni), % 6.0 to 8.0
0 to 0.030
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.22