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Ductile Cast Iron vs. Grade 361 Molybdenum

Ductile cast iron belongs to the iron alloys classification, while grade 361 molybdenum belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ductile cast iron and the bottom bar is grade 361 molybdenum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 170 to 180
310
Elongation at Break, % 2.1 to 20
6.3
Poisson's Ratio 0.28 to 0.31
0.31
Shear Modulus, GPa 64 to 70
120
Tensile Strength: Ultimate (UTS), MPa 460 to 920
620
Tensile Strength: Yield (Proof), MPa 310 to 670
530

Thermal Properties

Latent Heat of Fusion, J/g 270
370
Specific Heat Capacity, J/kg-K 490
250
Thermal Expansion, µm/m-K 11
7.0

Otherwise Unclassified Properties

Density, g/cm3 7.1 to 7.5
10
Embodied Carbon, kg CO2/kg material 1.5
28
Embodied Energy, MJ/kg 21
330
Embodied Water, L/kg 43
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 80
37
Resilience: Unit (Modulus of Resilience), kJ/m3 280 to 1330
450
Stiffness to Weight: Axial, points 12 to 14
17
Stiffness to Weight: Bending, points 24 to 26
22
Strength to Weight: Axial, points 17 to 35
17
Strength to Weight: Bending, points 18 to 29
16
Thermal Shock Resistance, points 17 to 35
21

Alloy Composition

Carbon (C), % 3.0 to 3.5
0 to 0.010
Iron (Fe), % 93.7 to 95.5
0 to 0.010
Molybdenum (Mo), % 0
99.9 to 100
Nickel (Ni), % 0
0 to 0.0050
Nitrogen (N), % 0
0 to 0.0020
Oxygen (O), % 0
0 to 0.0070
Phosphorus (P), % 0 to 0.080
0
Silicon (Si), % 1.5 to 2.8
0 to 0.010