Grade 705C Zirconium vs. AISI 440C Stainless Steel
Grade 705C zirconium belongs to the otherwise unclassified metals classification, while AISI 440C stainless steel belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.
For each property being compared, the top bar is grade 705C zirconium and the bottom bar is AISI 440C stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 98 | |
| 200 |
| Elongation at Break, % | 13 | |
| 2.0 to 14 |
| Poisson's Ratio | 0.34 | |
| 0.28 |
| Shear Modulus, GPa | 36 | |
| 76 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 710 to 1970 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 450 to 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 480 |
| Thermal Conductivity, W/m-K | 18 | |
| 22 |
| Thermal Expansion, µm/m-K | 5.7 | |
| 10 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.7 | |
| 7.7 |
| Embodied Water, L/kg | 450 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 66 | |
| 39 to 88 |
| Stiffness to Weight: Axial, points | 8.1 | |
| 14 |
| Stiffness to Weight: Bending, points | 23 | |
| 25 |
| Strength to Weight: Axial, points | 22 | |
| 26 to 71 |
| Strength to Weight: Bending, points | 22 | |
| 23 to 46 |
| Thermal Diffusivity, mm2/s | 9.9 | |
| 6.0 |
| Thermal Shock Resistance, points | 69 | |
| 26 to 71 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 1.0 to 1.2 |
| Chromium (Cr), % | 0 | |
| 16 to 18 |
| Hafnium (Hf), % | 0 to 4.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0050 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 78 to 83.1 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0 to 0.75 |
| Niobium (Nb), % | 2.0 to 3.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Zirconium (Zr), % | 91.9 to 98 | |
| 0 |