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ISO-WD43150 Magnesium vs. ASTM A204 Steel

ISO-WD43150 magnesium belongs to the magnesium alloys classification, while ASTM A204 steel belongs to the iron alloys. There are 30 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 ISO-WD43150 magnesium and the bottom bar is ASTM A204 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 2.8
18 to 22
Fatigue Strength, MPa 100
200 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 18
73
Shear Strength, MPa 140
330 to 360
Tensile Strength: Ultimate (UTS), MPa 250
520 to 590
Tensile Strength: Yield (Proof), MPa 150
290 to 330

Thermal Properties

Latent Heat of Fusion, J/g 350
250
Maximum Temperature: Mechanical, °C 95
410
Melting Completion (Liquidus), °C 610
1470
Melting Onset (Solidus), °C 590
1420 to 1430
Specific Heat Capacity, J/kg-K 990
470
Thermal Conductivity, W/m-K 140
52
Thermal Expansion, µm/m-K 27
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 170
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.4
Density, g/cm3 1.7
7.9
Embodied Carbon, kg CO2/kg material 24
1.5
Embodied Energy, MJ/kg 160
20
Embodied Water, L/kg 970
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1
90 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 250
220 to 290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 71
24
Strength to Weight: Axial, points 41
18 to 21
Strength to Weight: Bending, points 52
18 to 20
Thermal Diffusivity, mm2/s 81
14
Thermal Shock Resistance, points 14
15 to 17