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ISO-WD32250 Magnesium vs. ASTM Grade HG10 MNN Steel

ISO-WD32250 magnesium belongs to the magnesium alloys classification, while ASTM grade HG10 MNN 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 ASTM grade HG10 MNN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 45
200
Elongation at Break, % 4.5 to 8.6
23
Fatigue Strength, MPa 170 to 210
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 17
77
Tensile Strength: Ultimate (UTS), MPa 310 to 330
590
Tensile Strength: Yield (Proof), MPa 240 to 290
250

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Mechanical, °C 120
990
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 980
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 26
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 13
21
Density, g/cm3 1.8
7.8
Embodied Carbon, kg CO2/kg material 24
4.0
Embodied Energy, MJ/kg 160
58
Embodied Water, L/kg 950
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 26
110
Resilience: Unit (Modulus of Resilience), kJ/m3 630 to 930
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 67
25
Strength to Weight: Axial, points 49 to 51
21
Strength to Weight: Bending, points 58 to 60
20
Thermal Diffusivity, mm2/s 72
3.9
Thermal Shock Resistance, points 19 to 20
13

Alloy Composition


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Carbon (C), % 0
0.070 to 0.11
Chromium (Cr), % 0
18.5 to 20.5
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 0
57.9 to 66.5
Magnesium (Mg), % 94.9 to 97.1
0
Manganese (Mn), % 0
3.0 to 5.0
Molybdenum (Mo), % 0
0.25 to 0.45
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.7
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 2.5 to 4.0
0
Zirconium (Zr), % 0.45 to 0.8
0
Residuals, % 0 to 0.3
0