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Grade 361 Molybdenum vs. Nickel 684

Grade 361 molybdenum belongs to the otherwise unclassified metals classification, while nickel 684 belongs to the nickel 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 361 molybdenum and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 310
200
Elongation at Break, % 6.3
11
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 120
76
Tensile Strength: Ultimate (UTS), MPa 620
1190
Tensile Strength: Yield (Proof), MPa 530
800

Thermal Properties

Latent Heat of Fusion, J/g 370
320
Specific Heat Capacity, J/kg-K 250
470
Thermal Expansion, µm/m-K 7.0
13

Otherwise Unclassified Properties

Density, g/cm3 10
8.3
Embodied Carbon, kg CO2/kg material 28
10
Embodied Energy, MJ/kg 330
140
Embodied Water, L/kg 360
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
120
Resilience: Unit (Modulus of Resilience), kJ/m3 450
1610
Stiffness to Weight: Axial, points 17
13
Stiffness to Weight: Bending, points 22
23
Strength to Weight: Axial, points 17
40
Strength to Weight: Bending, points 16
30
Thermal Shock Resistance, points 21
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.010
0 to 0.15
Chromium (Cr), % 0
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 0 to 0.010
0 to 4.0
Manganese (Mn), % 0
0 to 0.75
Molybdenum (Mo), % 99.9 to 100
3.0 to 5.0
Nickel (Ni), % 0 to 0.0050
42.7 to 64
Nitrogen (N), % 0 to 0.0020
0
Oxygen (O), % 0 to 0.0070
0
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 0 to 0.010
0 to 0.75
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3