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ISO-WD32250 Magnesium vs. ACI-ASTM CE30 Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while ACI-ASTM CE30 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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-WD32250 magnesium and the bottom bar is ACI-ASTM CE30 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.5 to 8.6
11
Fatigue Strength, MPa 170 to 210
170
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 17
79
Tensile Strength: Ultimate (UTS), MPa 310 to 330
630
Tensile Strength: Yield (Proof), MPa 240 to 290
310

Thermal Properties

Latent Heat of Fusion, J/g 340
310
Maximum Temperature: Mechanical, °C 120
1100
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 550
1360
Specific Heat Capacity, J/kg-K 980
490
Thermal Conductivity, W/m-K 130
14
Thermal Expansion, µm/m-K 26
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
19
Density, g/cm3 1.8
7.7
Embodied Carbon, kg CO2/kg material 24
3.4
Embodied Energy, MJ/kg 160
49
Embodied Water, L/kg 950
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
59
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
240
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 49 to 51
23
Strength to Weight: Bending, points 58 to 60
21
Thermal Diffusivity, mm2/s 72
3.6
Thermal Shock Resistance, points 19 to 20
13

Alloy Composition


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Carbon (C), % 0
0 to 0.3
Chromium (Cr), % 0
26 to 30
Iron (Fe), % 0
55.1 to 66
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0
8.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 2.0
Sulfur (S), % 0
0 to 0.040
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0