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ASTM Grade LC9 Steel vs. EZ33A Magnesium

ASTM grade LC9 steel belongs to the iron alloys classification, while EZ33A magnesium belongs to the magnesium alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 EZ33A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
55
Elastic (Young's, Tensile) Modulus, GPa 190
44
Elongation at Break, % 22
2.6
Fatigue Strength, MPa 420
70
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Tensile Strength: Ultimate (UTS), MPa 660
150
Tensile Strength: Yield (Proof), MPa 590
100

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Maximum Temperature: Mechanical, °C 430
250
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1410
570
Specific Heat Capacity, J/kg-K 470
970
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.9
24
Electrical Conductivity: Equal Weight (Specific), % IACS 10
110

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
25
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 2.3
25
Embodied Energy, MJ/kg 31
190
Embodied Water, L/kg 65
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
3.6
Resilience: Unit (Modulus of Resilience), kJ/m3 920
120
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
61
Strength to Weight: Axial, points 23
22
Strength to Weight: Bending, points 21
33
Thermal Shock Resistance, points 20
9.2

Alloy Composition

Carbon (C), % 0 to 0.13
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0 to 0.1
Iron (Fe), % 87.4 to 91.5
0
Magnesium (Mg), % 0
91.5 to 95
Manganese (Mn), % 0 to 0.9
0
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
Sulfur (S), % 0 to 0.045
0
Unspecified Rare Earths, % 0
2.5 to 4.0
Vanadium (V), % 0 to 0.030
0
Zinc (Zn), % 0
2.0 to 3.1
Zirconium (Zr), % 0
0.5 to 1.0
Residuals, % 0
0 to 0.3