NiCr 80/20 Nb is an austenitic nickel-chromium alloy (NiCr alloy) additionally doped by Niobium. High operational temperature – 1200°C, excellent plasticity at room and mechanical stability at elevated temperatures makes this materials essential for chemical and corrosion resistance applications. NiCr 80/20 Nb is also known as NiCr 80/20 Cb. Niobium formerly known as Columbium used as alloying additive in big pool of superalloys usually to improve physical or mechanical properties of alloy at elevated temperatures.
Chemical composition
| Nickel Ni Min.75.0% | Chromium Cr 19.0-21.0% | Manganese Mn Max 2.5% | Niobium Nb 1.0% | Iron Fe 1.0% | Silicium Si Max 1.0-2.0% |
| Carbon C Max 0.15% | Sulfur S Max 0.015% | Phosphorus P Max 0.03% |
Physical properties
| Density g/cm3 | Electrical Resistivity at 20°C Ω mm2/m | Melting Point °C | Max Continuous Operating Temperature in Air °C | Magnetic Properties |
| 8.30 | 1.08 | 1380 | 1200 | non-magnetic |
Mechanical properties
| Yield Strength Rp0.2 MPa |
Tensile Strength Rm MPa |
Elongation A% |
Hardness Hv |
| 230 | 650-800 | 30 | 180 |
Product forms
| Product | Size (mm) | Condition of Supply |
| Wire | 0.2 – 12.0 | Soft Annealed Semi-Hard Hard |
Application
Consideration of alloy shall always be given when selecting of materials for metal belts, in such a manner NiCr 80/20 Nb is a good solution for parts used in chemical industries, because of its strength at wide range of temperatures:
- Industrial furnaces up to 1200 °C
- Wire meshes and conveyer belts systems
- Heat treatment parts