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ASTM Grade LC9 Steel vs. ZC63A Magnesium

ASTM grade LC9 steel belongs to the iron alloys classification, while ZC63A magnesium belongs to the magnesium alloys. There are 28 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 ASTM grade LC9 steel and the bottom bar is ZC63A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
60
Elastic (Young's, Tensile) Modulus, GPa 190
48
Elongation at Break, % 22
3.3
Fatigue Strength, MPa 420
94
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
19
Tensile Strength: Ultimate (UTS), MPa 660
220
Tensile Strength: Yield (Proof), MPa 590
130

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Maximum Temperature: Mechanical, °C 430
98
Melting Completion (Liquidus), °C 1450
550
Melting Onset (Solidus), °C 1410
470
Specific Heat Capacity, J/kg-K 470
950
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
32
Electrical Conductivity: Equal Weight (Specific), % IACS 10
140

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
13
Density, g/cm3 7.9
2.1
Embodied Carbon, kg CO2/kg material 2.3
22
Embodied Energy, MJ/kg 31
150
Embodied Water, L/kg 65
920

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
6.3
Resilience: Unit (Modulus of Resilience), kJ/m3 920
190
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
58
Strength to Weight: Axial, points 23
29
Strength to Weight: Bending, points 21
38
Thermal Shock Resistance, points 20
12

Alloy Composition

Carbon (C), % 0 to 0.13
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
2.4 to 3.0
Iron (Fe), % 87.4 to 91.5
0
Magnesium (Mg), % 0
89.2 to 91.9
Manganese (Mn), % 0 to 0.9
0.25 to 0.75
Molybdenum (Mo), % 0 to 0.2
0
Nickel (Ni), % 8.5 to 10
0 to 0.010
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.45
0 to 0.2
Sulfur (S), % 0 to 0.045
0
Vanadium (V), % 0 to 0.030
0
Zinc (Zn), % 0
5.5 to 6.5
Residuals, % 0
0 to 0.3