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EN-MC32110 Magnesium vs. SAE-AISI 1045 Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while SAE-AISI 1045 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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-MC32110 magnesium and the bottom bar is SAE-AISI 1045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
13 to 18
Fatigue Strength, MPa 80
220 to 370
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
72
Shear Strength, MPa 120
380 to 410
Tensile Strength: Ultimate (UTS), MPa 220
620 to 680
Tensile Strength: Yield (Proof), MPa 140
330 to 580

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 99
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
51
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 13
1.8
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 920
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
84 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 210
300 to 900
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
22 to 24
Strength to Weight: Bending, points 38
21 to 22
Thermal Diffusivity, mm2/s 58
14
Thermal Shock Resistance, points 12
20 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.43 to 0.5
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
98.5 to 99
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.6 to 0.9
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.2
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0