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EN-MC21320 Magnesium vs. ASTM A387 Grade 11 Steel

EN-MC21320 magnesium belongs to the magnesium alloys classification, while ASTM A387 grade 11 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-MC21320 magnesium and the bottom bar is ASTM A387 grade 11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 68
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 7.5
25
Fatigue Strength, MPa 95
200 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 130
320 to 390
Tensile Strength: Ultimate (UTS), MPa 230
500 to 600
Tensile Strength: Yield (Proof), MPa 140
270 to 350

Thermal Properties

Latent Heat of Fusion, J/g 370
260
Maximum Temperature: Mechanical, °C 110
430
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 530
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 66
39
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 91
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.9
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 23
1.6
Embodied Energy, MJ/kg 160
21
Embodied Water, L/kg 980
53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 15
100 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 200
200 to 320
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 38
18 to 21
Strength to Weight: Bending, points 50
18 to 20
Thermal Diffusivity, mm2/s 40
11
Thermal Shock Resistance, points 13
15 to 18

Alloy Composition


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Aluminum (Al), % 3.5 to 5.0
0
Carbon (C), % 0
0.050 to 0.17
Chromium (Cr), % 0
1.0 to 1.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
96.2 to 97.6
Magnesium (Mg), % 92.5 to 95.9
0
Manganese (Mn), % 0.1 to 0.7
0.4 to 0.65
Molybdenum (Mo), % 0
0.45 to 0.65
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0.5 to 1.5
0.5 to 0.8
Sulfur (S), % 0
0 to 0.025
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0