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Grade 366 Molybdenum vs. SAE-AISI D5 Steel

Grade 366 molybdenum belongs to the otherwise unclassified metals classification, while SAE-AISI D5 steel belongs to the iron alloys. There are 17 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is grade 366 molybdenum and the bottom bar is SAE-AISI D5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 300
190
Elongation at Break, % 2.2
5.4 to 14
Poisson's Ratio 0.3
0.28
Shear Modulus, GPa 120
75
Tensile Strength: Ultimate (UTS), MPa 580
770 to 2030

Thermal Properties

Latent Heat of Fusion, J/g 310
270
Specific Heat Capacity, J/kg-K 210
480
Thermal Expansion, µm/m-K 7.6
11

Otherwise Unclassified Properties

Density, g/cm3 12
7.7
Embodied Carbon, kg CO2/kg material 27
3.5
Embodied Energy, MJ/kg 340
51
Embodied Water, L/kg 300
120

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 18
25
Strength to Weight: Axial, points 13
28 to 73
Strength to Weight: Bending, points 13
24 to 46
Thermal Shock Resistance, points 18
26 to 67

Alloy Composition

Carbon (C), % 0 to 0.030
1.4 to 1.6
Chromium (Cr), % 0
11 to 13
Cobalt (Co), % 0
2.5 to 3.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 0.010
77.9 to 84.4
Manganese (Mn), % 0
0 to 0.6
Molybdenum (Mo), % 66.9 to 73
0.7 to 1.2
Nickel (Ni), % 0 to 0.0020
0 to 0.3
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0025
0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.010
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 27 to 33
0
Vanadium (V), % 0
0 to 1.0