ASTM B685 Alloy vs. Grade 363 Molybdenum
Both ASTM B685 alloy and grade 363 molybdenum are otherwise unclassified metals. There are 13 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 ASTM B685 alloy and the bottom bar is grade 363 molybdenum.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 310 |
| Poisson's Ratio | 0.37 | |
| 0.31 |
| Shear Modulus, GPa | 43 | |
| 120 |
| Tensile Strength: Ultimate (UTS), MPa | 660 to 1060 | |
| 580 to 720 |
Thermal Properties
| Latent Heat of Fusion, J/g | 180 | |
| 370 |
| Specific Heat Capacity, J/kg-K | 300 | |
| 250 |
| Thermal Expansion, µm/m-K | 14 | |
| 7.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 11 | |
| 10 |
Common Calculations
| Stiffness to Weight: Axial, points | 6.1 | |
| 17 |
| Stiffness to Weight: Bending, points | 15 | |
| 22 |
| Strength to Weight: Axial, points | 17 to 27 | |
| 16 to 20 |
| Strength to Weight: Bending, points | 16 to 21 | |
| 15 to 17 |
| Thermal Shock Resistance, points | 28 to 46 | |
| 19 to 24 |
Alloy Composition
| Aluminum (Al), % | 0 to 0.0050 | |
| 0 |
| Cadmium (Cd), % | 0 to 0.050 | |
| 0 |
| Carbon (C), % | 0 | |
| 0.010 to 0.030 |
| Copper (Cu), % | 39.5 to 40.5 | |
| 0 |
| Iron (Fe), % | 0 to 0.050 | |
| 0 to 0.010 |
| Lead (Pb), % | 0 to 0.030 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 99.3 to 99.5 |
| Nickel (Ni), % | 0 | |
| 0 to 0.0020 |
| Nitrogen (N), % | 0 | |
| 0 to 0.0020 |
| Oxygen (O), % | 0 | |
| 0 to 0.0030 |
| Palladium (Pd), % | 59 to 60.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.010 |
| Silver (Ag), % | 0 to 0.1 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0.4 to 0.55 |
| Zinc (Zn), % | 0 to 0.060 | |
| 0 |
| Zirconium (Zr), % | 0 | |
| 0.060 to 0.12 |
| Residuals, % | 0 to 0.2 | |
| 0 |