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Grade 361 Molybdenum vs. M1A Magnesium

Grade 361 molybdenum belongs to the otherwise unclassified metals classification, while M1A magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (10, 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 grade 361 molybdenum and the bottom bar is M1A magnesium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
45
Elongation at Break, % 6.3
5.5
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
18
Tensile Strength: Ultimate (UTS), MPa 620
230
Tensile Strength: Yield (Proof), MPa 530
130

Thermal Properties

Latent Heat of Fusion, J/g 370
350
Specific Heat Capacity, J/kg-K 250
990
Thermal Expansion, µm/m-K 7.0
26

Otherwise Unclassified Properties

Density, g/cm3 10
1.7
Embodied Carbon, kg CO2/kg material 28
24
Embodied Energy, MJ/kg 330
160
Embodied Water, L/kg 360
970

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
11
Resilience: Unit (Modulus of Resilience), kJ/m3 450
180
Stiffness to Weight: Axial, points 17
15
Stiffness to Weight: Bending, points 22
71
Strength to Weight: Axial, points 17
38
Strength to Weight: Bending, points 16
49
Thermal Shock Resistance, points 21
13

Alloy Composition

Calcium (Ca), % 0
0 to 0.3
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 0 to 0.010
0
Magnesium (Mg), % 0
97.2 to 98.8
Manganese (Mn), % 0
1.2 to 2.0
Molybdenum (Mo), % 99.9 to 100
0
Nickel (Ni), % 0 to 0.0050
0 to 0.010
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0070
0
Silicon (Si), % 0 to 0.010
0 to 0.1
Residuals, % 0
0 to 0.3