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ACI-ASTM CE8MN Steel vs. ISO-WD32350 Magnesium

ACI-ASTM CE8MN steel belongs to the iron alloys classification, while ISO-WD32350 magnesium belongs to the magnesium 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 ACI-ASTM CE8MN steel and the bottom bar is ISO-WD32350 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 29
5.7 to 10
Fatigue Strength, MPa 370
120 to 130
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
18
Tensile Strength: Ultimate (UTS), MPa 750
250 to 290
Tensile Strength: Yield (Proof), MPa 500
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 300
340
Maximum Temperature: Mechanical, °C 1100
95
Melting Completion (Liquidus), °C 1440
600
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 16
130
Thermal Expansion, µm/m-K 13
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
25
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 21
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 4.2
23
Embodied Energy, MJ/kg 58
160
Embodied Water, L/kg 180
960

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
14 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 620
210 to 380
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
68
Strength to Weight: Axial, points 27
39 to 46
Strength to Weight: Bending, points 23
50 to 55
Thermal Diffusivity, mm2/s 4.2
73
Thermal Shock Resistance, points 21
16 to 18

Alloy Composition

Aluminum (Al), % 0
0 to 0.1
Carbon (C), % 0 to 0.080
0
Chromium (Cr), % 22.5 to 25.5
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 56 to 66.4
0 to 0.060
Magnesium (Mg), % 0
95.7 to 97.7
Manganese (Mn), % 0 to 1.0
0.6 to 1.3
Molybdenum (Mo), % 3.0 to 4.5
0
Nickel (Ni), % 8.0 to 11
0 to 0.0050
Nitrogen (N), % 0.1 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.5
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
1.8 to 2.3
Residuals, % 0
0 to 0.3