Teradur Tech™ Mo
Nb
"Engineered for the abrasives you can barely see — fine particles that wear surfaces faster than you expect."
What is Teradur Tech™ Mo Nb?
Teradur Tech™ Mo Nb is a specialised overlay formulated specifically for fine particle and micro-abrasion environments — applications involving abrasive particles smaller than 3mm where standard chromium carbide overlays wear unpredictably and often faster than expected.
The addition of molybdenum (1–3%) and niobium (1–3%) transforms the carbide microstructure, producing finer, harder carbide phases that are more effective at resisting the cutting and polishing action of small, high-velocity abrasive particles. Standard overlays rely on large carbide phases — effective against coarse abrasives but vulnerable to fine particles that slip between them.
This grade is particularly valuable in pneumatic conveying systems, classifier components, cyclones, and any application where fine powders or granules are the primary wear agent.
Full Chemistry & Properties.
All values represent the controlled range achieved through our advanced manufacturing process. Actual batch reports available on request.
| Element / Property | Symbol | Range / Value | Role in Performance |
|---|---|---|---|
| Carbide Volume Fraction | — | >50% | High-density fine carbide phase network |
| Carbon | C | 3–5% | Carbide formation optimised for fine microstructure |
| Chromium | Cr | 20–25% | Chromium carbide matrix base |
| Molybdenum | Mo | 1–3% | Carbide refinement, fine particle wear resistance |
| Niobium | Nb | 1–3% | Hard niobium carbide formation, microstructure control |
| Surface Hardness | HRC | 59–64 HRC | As-deposited overlay surface hardness |
How It Protects.
Molybdenum and niobium additions produce a finer carbide grain size than standard grades. Smaller carbide phases close the gaps between hard particles, removing the pathways that fine abrasives exploit in conventional overlays.
Niobium forms its own carbide phase (NbC), which is harder than chromium carbide. These secondary hard phases are distributed throughout the matrix, adding an additional barrier against fine particle penetration.
The Mo Nb chemistry is specifically optimised for low-stress, high-frequency abrasion — the wear mode produced by fine particles moving at speed across a surface — rather than high-impact or gouging scenarios.
Industries & Applications.
Is Teradur Tech™ Mo Nb Right for Your Application?
Fine particle wear is often misdiagnosed. Our team will evaluate your particle size distribution and wear pattern to confirm whether the Mo Nb grade is the correct solution.