Grade 705C Zirconium vs. SAE-AISI 1078 Steel
Grade 705C zirconium belongs to the otherwise unclassified metals classification, while SAE-AISI 1078 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is grade 705C zirconium and the bottom bar is SAE-AISI 1078 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 200 | |
| 220 to 230 |
| Elastic (Young's, Tensile) Modulus, GPa | 98 | |
| 190 |
| Elongation at Break, % | 13 | |
| 11 to 14 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 36 | |
| 72 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 730 to 780 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 430 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 470 |
| Thermal Conductivity, W/m-K | 18 | |
| 49 |
| Thermal Expansion, µm/m-K | 5.7 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.7 | |
| 7.8 |
| Embodied Water, L/kg | 450 | |
| 45 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 66 | |
| 77 to 90 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 790 | |
| 490 to 860 |
| Stiffness to Weight: Axial, points | 8.1 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 24 |
| Strength to Weight: Axial, points | 22 | |
| 26 to 28 |
| Strength to Weight: Bending, points | 22 | |
| 23 to 24 |
| Thermal Diffusivity, mm2/s | 9.9 | |
| 13 |
| Thermal Shock Resistance, points | 69 | |
| 25 to 26 |
Alloy Composition
| Carbon (C), % | 0 to 0.1 | |
| 0.72 to 0.85 |
| Hafnium (Hf), % | 0 to 4.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0050 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 98.5 to 99 |
| Manganese (Mn), % | 0 | |
| 0.3 to 0.6 |
| 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 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Zirconium (Zr), % | 91.9 to 98 | |
| 0 |