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ISO-WD32250 Magnesium vs. EN 1.0038 Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while EN 1.0038 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 EN 1.0038 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
190
Elongation at Break, % 4.5 to 8.6
23 to 25
Fatigue Strength, MPa 170 to 210
140 to 160
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 17
73
Shear Strength, MPa 180 to 190
240 to 270
Tensile Strength: Ultimate (UTS), MPa 310 to 330
380 to 430
Tensile Strength: Yield (Proof), MPa 240 to 290
200 to 220

Thermal Properties

Latent Heat of Fusion, J/g 340
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 980
470
Thermal Conductivity, W/m-K 130
49
Thermal Expansion, µm/m-K 26
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 130
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.1
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
1.4
Embodied Energy, MJ/kg 160
19
Embodied Water, L/kg 950
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
72 to 88
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
110 to 130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 67
24
Strength to Weight: Axial, points 49 to 51
13 to 15
Strength to Weight: Bending, points 58 to 60
15 to 16
Thermal Diffusivity, mm2/s 72
13
Thermal Shock Resistance, points 19 to 20
12 to 13

Alloy Composition

Carbon (C), % 0
0 to 0.23
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 0
97.1 to 100
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.080
Nickel (Ni), % 0
0 to 0.3
Nitrogen (N), % 0
0 to 0.014
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0
0 to 0.55
Sulfur (S), % 0
0 to 0.045
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0