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Grade 365 Molybdenum vs. SAE-AISI M42 Steel

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while SAE-AISI M42 steel belongs to the iron alloys. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade 365 molybdenum and the bottom bar is SAE-AISI M42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
200
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
78
Tensile Strength: Ultimate (UTS), MPa 620
810 to 2310

Thermal Properties

Latent Heat of Fusion, J/g 370
270
Specific Heat Capacity, J/kg-K 250
450
Thermal Expansion, µm/m-K 7.0
12

Otherwise Unclassified Properties

Density, g/cm3 10
8.2
Embodied Carbon, kg CO2/kg material 28
7.4
Embodied Energy, MJ/kg 330
100
Embodied Water, L/kg 360
140

Common Calculations

Stiffness to Weight: Axial, points 17
14
Stiffness to Weight: Bending, points 22
24
Strength to Weight: Axial, points 17
28 to 79
Strength to Weight: Bending, points 16
24 to 48
Thermal Shock Resistance, points 21
25 to 71

Alloy Composition

Carbon (C), % 0 to 0.010
1.1 to 1.2
Chromium (Cr), % 0
3.5 to 4.3
Cobalt (Co), % 0
7.8 to 8.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 0.010
76.3 to 81
Manganese (Mn), % 0
0.15 to 0.4
Molybdenum (Mo), % 99.9 to 100
9.0 to 10
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0.15 to 0.65
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
1.2 to 1.9
Vanadium (V), % 0
1.0 to 1.4