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ASTM Grade HG10 MNN Steel vs. AZ31C Magnesium

ASTM grade HG10 MNN steel belongs to the iron alloys classification, while AZ31C 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 ASTM grade HG10 MNN steel and the bottom bar is AZ31C magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
45
Elongation at Break, % 23
12
Fatigue Strength, MPa 170
150
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
17
Tensile Strength: Ultimate (UTS), MPa 590
260
Tensile Strength: Yield (Proof), MPa 250
200

Thermal Properties

Latent Heat of Fusion, J/g 290
350
Maximum Temperature: Mechanical, °C 990
110
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1370
550
Specific Heat Capacity, J/kg-K 480
990
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 16
26

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
19
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
98

Otherwise Unclassified Properties

Base Metal Price, % relative 21
12
Density, g/cm3 7.8
1.7
Embodied Carbon, kg CO2/kg material 4.0
23
Embodied Energy, MJ/kg 58
160
Embodied Water, L/kg 160
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
28
Resilience: Unit (Modulus of Resilience), kJ/m3 160
440
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
70
Strength to Weight: Axial, points 21
42
Strength to Weight: Bending, points 20
53
Thermal Diffusivity, mm2/s 3.9
74
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0
2.4 to 3.6
Carbon (C), % 0.070 to 0.11
0
Chromium (Cr), % 18.5 to 20.5
0
Copper (Cu), % 0 to 0.5
0 to 0.1
Iron (Fe), % 57.9 to 66.5
0
Magnesium (Mg), % 0
93.4 to 97
Manganese (Mn), % 3.0 to 5.0
0.15 to 1.0
Molybdenum (Mo), % 0.25 to 0.45
0
Nickel (Ni), % 11.5 to 13.5
0 to 0.030
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0.2 to 0.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.7
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Zinc (Zn), % 0
0.5 to 1.5
Residuals, % 0
0 to 0.3