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EN-MC32110 Magnesium vs. SAE-AISI 4130 Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while SAE-AISI 4130 steel belongs to the iron alloys. 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 4130 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
200 to 300
Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
13 to 26
Fatigue Strength, MPa 80
320 to 660
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Shear Strength, MPa 120
340 to 640
Tensile Strength: Ultimate (UTS), MPa 220
530 to 1040
Tensile Strength: Yield (Proof), MPa 140
440 to 980

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 99
420
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
43
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.4
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 920
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
83 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 210
500 to 2550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
19 to 37
Strength to Weight: Bending, points 38
19 to 29
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 12
16 to 31

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.28 to 0.33
Chromium (Cr), % 0
0.8 to 1.1
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
97.3 to 98.2
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.4 to 0.6
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0