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ASTM A209 Steel vs. EN-MC65120 Magnesium

ASTM A209 steel belongs to the iron alloys classification, while EN-MC65120 magnesium belongs to the magnesium 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 ASTM A209 steel and the bottom bar is EN-MC65120 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 150
55
Elastic (Young's, Tensile) Modulus, GPa 190
45
Elongation at Break, % 34
3.1
Fatigue Strength, MPa 180 to 200
80
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
17
Shear Strength, MPa 280 to 310
92
Tensile Strength: Ultimate (UTS), MPa 420 to 460
160
Tensile Strength: Yield (Proof), MPa 220 to 250
110

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 410
180
Melting Completion (Liquidus), °C 1470
590
Melting Onset (Solidus), °C 1420 to 1430
520
Specific Heat Capacity, J/kg-K 470
970
Thermal Conductivity, W/m-K 50
100
Thermal Expansion, µm/m-K 13
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
25
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
120

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
25
Density, g/cm3 7.9
1.9
Embodied Carbon, kg CO2/kg material 1.5
25
Embodied Energy, MJ/kg 20
190
Embodied Water, L/kg 47
930

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
4.4
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 170
140
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
62
Strength to Weight: Axial, points 15 to 16
23
Strength to Weight: Bending, points 16 to 17
34
Thermal Diffusivity, mm2/s 13
56
Thermal Shock Resistance, points 12 to 14
9.8