Duroxite® 500 is the latest addition to the range of Duroxite® overlay products. It is designed for applications involving abrasive wear and high impact in dry and wet environments. Duroxite® 500 can replace cast materials, titanium carbide overlay products or ceramic materials.
Standard overlay thicknesses |
Standard plate sizes |
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Single pass |
Multiple passes |
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Metric unit |
Imperial unit |
Metric unit |
Imperial unit |
Metric unit |
Imperial unit |
| 3 mm on 6 mm | 1/8’’ on 1/4’’ | 6 mm on 6 mm | 1/4’’ on 1/4’’ | 1.2 m x 2.4 m 1.5 m x 3.0 m 1.8 m x 3.0 m 2.4 m x 3.0 m |
4’ x 8’ 5’ x 10’ 6’ x 10’ 8’ x 10’ |
| 5 mm on 8 mm | 3/16’’ on 5/16’’ | 6 mm on 10 mm | 1/4’’ on 3/8’’ | ||
| 10 mm on 10 mm | 3/8’’ on 3/8’’ | ||||
| 12 mm on 12 mm | 1/2’’ on 1/2’’ | ||||
| 20 mm on 10 mm | 3/4’’ on 3/8’’ | ||||
Number of overlay passes |
Typical surface hardness 1) |
| Single and double passes | 67 to 70 HRC (925 to 1075 HV) |
1) Surface hardness is measured on machined flat surface just below overlay surface.
Number of overlay passes |
ASTM G65 – Procedure A weight loss 2) |
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Surface |
75% depth of overlay 3) |
| Single pass | 0.25 g maximum | 0.25 g maximum |
| Double passes | 0.18 g maximum | 0.18 g maximum |
2) ASTM G65 is a standard test measuring sliding abrasion resistance using a dry sand/rubber wheel apparatus. ASTM G65-Procedure A is the most severe test method.
3) ASTM G65 wear test is conducted at 75% depth of the overlay materials to ensure consistently good wear resistance from the top surface through
to the depth of 75% of the overlay.
Duroxite® 500 overlay contains an ultra-fine complex borocarbide phase down to approximately 500 nm in a ductile matrix. The typical volume fraction of borocarbides is maintained between 60 to 70% to form a uni-form hard matrix. The SEM (Scanning Electron Microscopy) / EDS (Energy Dispersive Spectrometry) analysis of the Duroxite® 500 overlay confirms that the refined borocarbides are niobium-rich borocarbides, and chromium-rich boro carbides dispersed in an iron-based matrix. The ultra-fine borocarbides are approximately 200 times finer than the traditional chromium carbides.
Overall and overlay thickness tolerances can be guaranteed within ±10% of specified thickness.
Plate flatness tolerance can be guaranteed within ±3 mm (±1/8”) over 1.5 m (5’) plate length for plate dimensions equal to or less than 1.5 m (5’) x 3.0 m (10’). For plates greater than 1.5 m (5’) wide by 3.0 m (10’) long, the plate flatness tolerance can be guaranteed within ±25 mm (±1”).
