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EN-MC21310 Magnesium vs. ASTM A514 Steel

EN-MC21310 magnesium belongs to the magnesium alloys classification, while ASTM A514 steel belongs to the iron alloys. 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-MC21310 magnesium and the bottom bar is ASTM A514 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
240 to 250
Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 9.0
18 to 21
Fatigue Strength, MPa 86
470 to 540
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 120
490 to 520
Tensile Strength: Ultimate (UTS), MPa 200
790 to 830
Tensile Strength: Yield (Proof), MPa 120
690 to 770

Thermal Properties

Latent Heat of Fusion, J/g 360
250 to 260
Maximum Temperature: Mechanical, °C 100
400 to 440
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 560
1420
Specific Heat Capacity, J/kg-K 1000
470
Thermal Conductivity, W/m-K 89
37 to 51
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
7.2 to 7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.3 to 8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.3 to 3.8
Density, g/cm3 1.6
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 23
1.6 to 1.8
Embodied Energy, MJ/kg 160
21 to 25
Embodied Water, L/kg 970
48 to 57

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16
140 to 170
Resilience: Unit (Modulus of Resilience), kJ/m3 160
1280 to 1590
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 73
24
Strength to Weight: Axial, points 34
28 to 29
Strength to Weight: Bending, points 47
24 to 25
Thermal Diffusivity, mm2/s 55
10 to 14
Thermal Shock Resistance, points 12
23 to 24