Alloy 330 Nb is a special alloy similar in physical and electrical characteristics to regular NiCr 40/20 (1.4886), but additionally doped by 1.0 to 1.5% of Columbium. Additional content of Columbium in Alloy 330 Nb increases mechanical strength at elevated temperatures. For electrical and heating application reasonable to use pure Alloy 330 Nb due to longer life time of elements in operational process. The recommended field of application for this alloy is the manufacturing of furnace parts such as conveyer belts, wire meshes or other products working at fluctuating temperatures up to 1100 °C.
Chemical composition
| Iron Fe Bal. | Nickel Ni 33-37% | Silicon Si 1-2% | Chromium Cr 20-23% | Manganese Mn Max 2% | Carbon C Max 0.15% |
| Sulfur S Max 0.015% | Nitrogen N Max 0.11% | Phosphorus P Max 0.03% | Other Nb m1-5% |
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 |
| 7.95 | 1.09 | 1380 | 1050 | Non-Magnetic |
Mechanical properties
| Yield Strength Rp0.2 MPa |
Tensile Strength Rm MPa |
Elongation A% |
Hardness Hv |
| 230 | 500-750 | 32 | 223 |
Product forms
| Product | Size (mm) | Condition of Supply |
| Wire | 0.2 – 12.0 | Soft Annealed Semi-Hard Hard |
Application
- Vonveyer belts / Wire meshes
- Anchoring and fastening systems
- Industrial furnace parts