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EN-MC32110 Magnesium vs. ASTM A387 Grade 12 Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ASTM A387 grade 12 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 ASTM A387 grade 12 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
25
Fatigue Strength, MPa 80
190 to 230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Shear Strength, MPa 120
300 to 330
Tensile Strength: Ultimate (UTS), MPa 220
470 to 520
Tensile Strength: Yield (Proof), MPa 140
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 99
430
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
44
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
2.8
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.6
Embodied Energy, MJ/kg 150
21
Embodied Water, L/kg 920
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
98 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 210
180 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
16 to 18
Strength to Weight: Bending, points 38
17 to 18
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 12
14 to 15

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.050 to 0.17
Chromium (Cr), % 0
0.8 to 1.2
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
97 to 98.2
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.6
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.2
0.15 to 0.4
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0