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EN-MC65210 Magnesium vs. ASTM A387 Grade 5 Steel

EN-MC65210 magnesium belongs to the magnesium alloys classification, while ASTM A387 grade 5 steel belongs to the iron alloys. There are 29 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-MC65210 magnesium and the bottom bar is ASTM A387 grade 5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
150 to 180
Elastic (Young's, Tensile) Modulus, GPa 44
190
Elongation at Break, % 2.8
20 to 21
Fatigue Strength, MPa 110
160 to 240
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
74
Shear Strength, MPa 150
310 to 380
Tensile Strength: Ultimate (UTS), MPa 270
500 to 600
Tensile Strength: Yield (Proof), MPa 200
230 to 350

Thermal Properties

Latent Heat of Fusion, J/g 340
260
Maximum Temperature: Mechanical, °C 170
510
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 540
1420
Specific Heat Capacity, J/kg-K 970
470
Thermal Conductivity, W/m-K 110
40
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 110
9.2

Otherwise Unclassified Properties

Density, g/cm3 2.0
7.8
Embodied Carbon, kg CO2/kg material 27
1.7
Embodied Energy, MJ/kg 220
23

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
83 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 450
140 to 320
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 59
25
Strength to Weight: Axial, points 38
18 to 21
Strength to Weight: Bending, points 47
18 to 20
Thermal Diffusivity, mm2/s 58
11
Thermal Shock Resistance, points 17
14 to 17

Alloy Composition


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Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
4.0 to 6.0
Copper (Cu), % 0 to 0.030
0
Iron (Fe), % 0 to 0.010
92.1 to 95.3
Magnesium (Mg), % 92.6 to 95.6
0
Manganese (Mn), % 0 to 0.15
0.3 to 0.6
Molybdenum (Mo), % 0
0.45 to 0.65
Nickel (Ni), % 0 to 0.0050
0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.010
0 to 0.5
Silver (Ag), % 2.0 to 3.0
0
Sulfur (S), % 0
0 to 0.025
Unspecified Rare Earths, % 2.0 to 3.0
0
Zinc (Zn), % 0 to 0.2
0
Zirconium (Zr), % 0.4 to 1.0
0
Residuals, % 0 to 0.010
0