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EN-MC35110 Magnesium vs. ASTM A387 Grade 9 Steel

EN-MC35110 magnesium belongs to the magnesium alloys classification, while ASTM A387 grade 9 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-MC35110 magnesium and the bottom bar is ASTM A387 grade 9 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 63
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 3.1
20 to 21
Fatigue Strength, MPa 110
160 to 240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 18
75
Shear Strength, MPa 130
310 to 380
Tensile Strength: Ultimate (UTS), MPa 230
500 to 600
Tensile Strength: Yield (Proof), MPa 150
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 330
270
Maximum Temperature: Mechanical, °C 140
600
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 520
1410
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
26
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 130
10

Otherwise Unclassified Properties

Base Metal Price, % relative 18
6.5
Density, g/cm3 1.9
7.8
Embodied Carbon, kg CO2/kg material 24
2.1
Embodied Energy, MJ/kg 170
28
Embodied Water, L/kg 940
87

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 260
140 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 63
25
Strength to Weight: Axial, points 34
18 to 21
Strength to Weight: Bending, points 44
18 to 20
Thermal Diffusivity, mm2/s 61
6.9
Thermal Shock Resistance, points 14
14 to 17

Alloy Composition

Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
8.0 to 10
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
87.1 to 90.8
Magnesium (Mg), % 92 to 95.4
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.010
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 0.75 to 1.8
0
Vanadium (V), % 0
0 to 0.040
Zinc (Zn), % 3.5 to 5.0
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0