Teradur Tech™
HT
"Maintains hardness and resists oxidation where standard overlays soften and fail."
What is Teradur Tech™ HT?
Teradur Tech™ HT is our high temperature overlay, engineered for applications where abrasion occurs simultaneously with elevated temperatures — conditions that cause standard chromium carbide overlays to rapidly soften, oxidise, and lose their wear resistance.
The HT formulation incorporates vanadium (1–2%), tungsten (1–3%), molybdenum (1–2%), and niobium (1–3%) — a combination that stabilises the carbide microstructure at elevated temperatures and forms a protective oxide layer that resists scaling. These additions maintain overlay hardness at temperatures where standard grades would be ineffective.
Teradur Tech™ HT is the specified solution for sinter plants, hot ore handling, clinker conveying, and any other application where material temperatures regularly exceed 300°C.
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 wear-resistant phase network |
| Carbon | C | 4–5% | Carbide formation and matrix hardness |
| Chromium | Cr | 20–25% | Chromium carbide matrix base and oxidation resistance |
| Molybdenum | Mo | 1–2% | High temperature carbide stability |
| Niobium | Nb | 1–3% | Refractory carbide formation, temperature resistance |
| Vanadium | V | 1–2% | Fine carbide formation, hot hardness retention |
| Tungsten | W | 1–3% | Refractory hard phase, elevated temperature performance |
| Surface Hardness | HRC | 60–65 HRC | As-deposited overlay surface hardness |
How It Protects.
Vanadium, tungsten, molybdenum, and niobium are all refractory elements — metals that retain their properties at high temperatures. Their carbides remain stable and hard at temperatures that would cause standard chromium carbides to dissolve into the matrix.
The combined effect of elevated chromium and the refractory alloy additions creates a surface that forms a stable, adherent oxide layer at high temperatures — preventing the scaling and material loss that shortens the life of standard overlays in hot environments.
Unlike standard grades that soften progressively above 300°C, the HT chemistry maintains overlay hardness through the temperature range typically encountered in sinter plants, clinker handling, and hot ore conveying.
Industries & Applications.
Is Teradur Tech™ HT Right for Your Application?
High temperature wear requires a precise solution. Our team will assess your operating temperature range and abrasive conditions to specify the correct grade and thickness.