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EN-MC21210 Magnesium vs. ASTM A356 Grade 9

EN-MC21210 magnesium belongs to the magnesium alloys classification, while ASTM A356 grade 9 belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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-MC21210 magnesium and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 48
200
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 14
17
Fatigue Strength, MPa 70
310
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Tensile Strength: Ultimate (UTS), MPa 190
670
Tensile Strength: Yield (Proof), MPa 90
460

Thermal Properties

Latent Heat of Fusion, J/g 350
260
Maximum Temperature: Mechanical, °C 100
440
Melting Completion (Liquidus), °C 600
1470
Melting Onset (Solidus), °C 570
1430
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 120
41
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 12
3.6
Density, g/cm3 1.6
7.8
Embodied Carbon, kg CO2/kg material 24
2.4
Embodied Energy, MJ/kg 160
33
Embodied Water, L/kg 980
56

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
100
Resilience: Unit (Modulus of Resilience), kJ/m3 92
570
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 72
24
Strength to Weight: Axial, points 32
24
Strength to Weight: Bending, points 44
22
Thermal Diffusivity, mm2/s 76
11
Thermal Shock Resistance, points 11
19

Alloy Composition


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Aluminum (Al), % 1.6 to 2.6
0
Carbon (C), % 0
0 to 0.2
Chromium (Cr), % 0
1.0 to 1.5
Copper (Cu), % 0 to 0.010
0
Iron (Fe), % 0 to 0.0050
95.2 to 97.2
Magnesium (Mg), % 96.3 to 98.3
0
Manganese (Mn), % 0.1 to 0.7
0.5 to 0.9
Molybdenum (Mo), % 0
0.9 to 1.2
Nickel (Ni), % 0 to 0.0020
0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.1
0.2 to 0.6
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.010
0