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EZ33A Magnesium vs. ACI-ASTM CG6MMN Steel

EZ33A magnesium belongs to the magnesium alloys classification, while ACI-ASTM CG6MMN steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 EZ33A magnesium and the bottom bar is ACI-ASTM CG6MMN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 55
190
Elastic (Young's, Tensile) Modulus, GPa 44
200
Elongation at Break, % 2.6
34
Fatigue Strength, MPa 70
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
79
Tensile Strength: Ultimate (UTS), MPa 150
670
Tensile Strength: Yield (Proof), MPa 100
320

Thermal Properties

Latent Heat of Fusion, J/g 330
300
Maximum Temperature: Mechanical, °C 250
1080
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 570
1380
Specific Heat Capacity, J/kg-K 970
480
Thermal Expansion, µm/m-K 27
17

Otherwise Unclassified Properties

Base Metal Price, % relative 25
22
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 25
4.8
Embodied Energy, MJ/kg 190
68
Embodied Water, L/kg 930
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6
190
Resilience: Unit (Modulus of Resilience), kJ/m3 120
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 61
25
Strength to Weight: Axial, points 22
24
Strength to Weight: Bending, points 33
22
Thermal Shock Resistance, points 9.2
14

Alloy Composition

Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
20.5 to 23.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0
51.9 to 62.1
Magnesium (Mg), % 91.5 to 95
0
Manganese (Mn), % 0
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0 to 0.010
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Unspecified Rare Earths, % 2.5 to 4.0
0
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 2.0 to 3.1
0
Zirconium (Zr), % 0.5 to 1.0
0
Residuals, % 0 to 0.3
0