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ACI-ASTM CD4MCuN Steel vs. EN-MC21210 Magnesium

ACI-ASTM CD4MCuN steel belongs to the iron alloys classification, while EN-MC21210 magnesium belongs to the magnesium 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 ACI-ASTM CD4MCuN steel and the bottom bar is EN-MC21210 magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
44
Elongation at Break, % 18
14
Fatigue Strength, MPa 340
70
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
17
Tensile Strength: Ultimate (UTS), MPa 770
190
Tensile Strength: Yield (Proof), MPa 550
90

Thermal Properties

Latent Heat of Fusion, J/g 300
350
Maximum Temperature: Mechanical, °C 1100
100
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1380
570
Specific Heat Capacity, J/kg-K 480
1000
Thermal Conductivity, W/m-K 17
120
Thermal Expansion, µm/m-K 13
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
130

Otherwise Unclassified Properties

Base Metal Price, % relative 18
12
Density, g/cm3 7.8
1.6
Embodied Carbon, kg CO2/kg material 3.5
24
Embodied Energy, MJ/kg 49
160
Embodied Water, L/kg 180
980

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
22
Resilience: Unit (Modulus of Resilience), kJ/m3 760
92
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
72
Strength to Weight: Axial, points 28
32
Strength to Weight: Bending, points 24
44
Thermal Diffusivity, mm2/s 4.5
76
Thermal Shock Resistance, points 21
11

Alloy Composition

Aluminum (Al), % 0
1.6 to 2.6
Carbon (C), % 0 to 0.040
0
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 2.7 to 3.3
0 to 0.010
Iron (Fe), % 59.5 to 66.3
0 to 0.0050
Magnesium (Mg), % 0
96.3 to 98.3
Manganese (Mn), % 0 to 1.0
0.1 to 0.7
Molybdenum (Mo), % 1.7 to 2.3
0
Nickel (Ni), % 4.7 to 6.0
0 to 0.0020
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.1
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.010