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EN-MC32110 Magnesium vs. ASTM A372 Grade H Steel

EN-MC32110 magnesium belongs to the magnesium alloys classification, while ASTM A372 grade H steel belongs to the iron alloys. 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 EN-MC32110 magnesium and the bottom bar is ASTM A372 grade H steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60
200 to 280
Elastic (Young's, Tensile) Modulus, GPa 49
190
Elongation at Break, % 2.2
20 to 22
Fatigue Strength, MPa 80
310 to 380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 19
73
Shear Strength, MPa 120
410 to 570
Tensile Strength: Ultimate (UTS), MPa 220
650 to 910
Tensile Strength: Yield (Proof), MPa 140
430 to 550

Thermal Properties

Latent Heat of Fusion, J/g 330
250
Maximum Temperature: Mechanical, °C 99
410
Melting Completion (Liquidus), °C 600
1460
Melting Onset (Solidus), °C 500
1420
Specific Heat Capacity, J/kg-K 950
470
Thermal Conductivity, W/m-K 120
45
Thermal Expansion, µm/m-K 26
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
2.3
Density, g/cm3 2.1
7.8
Embodied Carbon, kg CO2/kg material 22
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 920
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 210
500 to 810
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 58
24
Strength to Weight: Axial, points 29
23 to 32
Strength to Weight: Bending, points 38
21 to 27
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 12
19 to 27

Alloy Composition


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Aluminum (Al), % 0 to 0.2
0
Carbon (C), % 0
0.3 to 0.4
Chromium (Cr), % 0
0.4 to 0.65
Copper (Cu), % 2.4 to 3.0
0
Iron (Fe), % 0 to 0.050
97.3 to 98.3
Magnesium (Mg), % 89.3 to 91.9
0
Manganese (Mn), % 0.25 to 0.75
0.75 to 1.1
Molybdenum (Mo), % 0
0.15 to 0.25
Nickel (Ni), % 0 to 0.010
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.2
0.15 to 0.35
Sulfur (S), % 0
0 to 0.010
Zinc (Zn), % 5.5 to 6.5
0
Residuals, % 0 to 0.010
0