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EN-MC65220 Magnesium vs. ASTM Grade LC3 Steel

EN-MC65220 magnesium belongs to the magnesium alloys classification, while ASTM grade LC3 steel belongs to the iron alloys. There are 29 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 EN-MC65220 magnesium and the bottom bar is ASTM grade LC3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
170
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.2
27
Fatigue Strength, MPa 110
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 270
570
Tensile Strength: Yield (Proof), MPa 200
310

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 160
410
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 110
52
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 80
4.0
Density, g/cm3 1.9
7.9
Embodied Carbon, kg CO2/kg material 27
1.7
Embodied Energy, MJ/kg 210
23

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.5
130
Resilience: Unit (Modulus of Resilience), kJ/m3 450
260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 62
24
Strength to Weight: Axial, points 40
20
Strength to Weight: Bending, points 49
19
Thermal Diffusivity, mm2/s 61
14
Thermal Shock Resistance, points 17
17

Alloy Composition


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Carbon (C), % 0
0 to 0.15
Copper (Cu), % 0.050 to 0.1
0
Iron (Fe), % 0 to 0.010
94.4 to 96.5
Magnesium (Mg), % 93.8 to 96.8
0
Manganese (Mn), % 0 to 0.15
0.5 to 0.8
Nickel (Ni), % 0 to 0.0050
3.0 to 4.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.010
0 to 0.6
Silver (Ag), % 1.3 to 1.7
0
Sulfur (S), % 0
0 to 0.045
Unspecified Rare Earths, % 1.5 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0