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Grade 365 Molybdenum vs. C84400 Valve Metal

Grade 365 molybdenum belongs to the otherwise unclassified metals classification, while C84400 valve metal belongs to the copper alloys. There are 20 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is grade 365 molybdenum and the bottom bar is C84400 valve metal.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
100
Elongation at Break, % 6.3
19
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 120
39
Tensile Strength: Ultimate (UTS), MPa 620
230
Tensile Strength: Yield (Proof), MPa 530
110

Thermal Properties

Latent Heat of Fusion, J/g 370
180
Specific Heat Capacity, J/kg-K 250
370
Thermal Expansion, µm/m-K 7.0
19

Otherwise Unclassified Properties

Density, g/cm3 10
8.8
Embodied Carbon, kg CO2/kg material 28
2.8
Embodied Energy, MJ/kg 330
46
Embodied Water, L/kg 360
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
36
Resilience: Unit (Modulus of Resilience), kJ/m3 450
58
Stiffness to Weight: Axial, points 17
6.6
Stiffness to Weight: Bending, points 22
18
Strength to Weight: Axial, points 17
7.2
Strength to Weight: Bending, points 16
9.4
Thermal Shock Resistance, points 21
8.3

Alloy Composition

Aluminum (Al), % 0
0 to 0.0050
Antimony (Sb), % 0
0 to 0.25
Carbon (C), % 0 to 0.010
0
Copper (Cu), % 0
78 to 82
Iron (Fe), % 0 to 0.010
0 to 0.4
Lead (Pb), % 0
6.0 to 8.0
Molybdenum (Mo), % 99.9 to 100
0
Nickel (Ni), % 0 to 0.0020
0 to 1.0
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0015
0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0 to 0.010
0 to 0.0050
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0
2.3 to 3.5
Zinc (Zn), % 0
7.0 to 10
Residuals, % 0
0 to 0.7