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Duroxite® 201 is developed for severe wear and impact applications applying specially formulated abrasive materials on Hardox® 450 backing plate. The overlay material is composed of primary chromium-rich carbides and refined multiple-alloy complex carbides dispersed evenly in a ductile eutectic austenite matrix. The additional multi-alloy carbides are harder and finer than the co-existing chromium-rich carbides which interlock between large primary chromium-rich carbides in a matrix.
Duroxite® 201 is widely used in many industries including mining, cement and power generation. Some specific applications include:
|Mining||Screen plates, loader bucket liners, feeding systems for ball mills, loader bucket liners, bucket lip shrouds, bucket side shrouds, chutes, liner plates and skip liners|
|Cement||Cement furnace components, sinter plant parts, fan blades, mixer blades, crews, gyratory mantles, coal and cement pulverizer rolls, raw material crushing components, molding panels|
|Power||Coal discharger chutes|
For more information on applications see the Duroxite™ Product brochure.
|1/4" on 1/4"|
|3/8" on 3/8"|
|1/4" on 3/4"|
|1/4" on 1"|
|1/4" on 1 1/4"|
Other plate sizes and custom thicknesses can be produced upon request.
|Metric unit||Imperial unit|
|1.2 m x 2.4 m||4' x 8'|
|1.5 m x 3.0 m||5' x 10'|
|1.8 m x 3.0 m||6' x 10'|
Standard plate sizes above are available for all standard overlay thicknesses. Other plate sizes and custom thicknesses can be produced upon request.
|Number of overlay passes||Typical surface hardness1) (HRC)||Typical surface hardness1) (HV)||Surface(g max)||75 % depth of overlay 3)(g max)|
|Multiple passes||60 - 65||700 - 850||0.12||0.12|
1) Surface hardness is measured on machined flat surface just below overlay surface.
2) ASTM G65 - Procedure A weight loss, 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 - Procedure A weight loss, 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.
The microstructure of Duroxite® 200 contains primary chromium-rich carbides and refined multiple-alloy complex carbides with a typical hardness of 2500 to 3000 HK4) dispersed evenly in a ductile eutectic austenite matrix. The typical volume fraction of primary chromium-rich carbides is maintained between 30 to 40% with 7 to 10% of multi-alloy complex carbides.
4) HK is the Knoop microhardness used primarily for very brittle materials or thin sheets.
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 following flatness guarantees apply.
|Imperial unit||6" x 10"||8" x 10"|
|3/16" on 5/16"||1 1/4"||1 1/2"|
|1/4" on 1/4"||1 1/4"||1 1/2"|
|3/8" on 3/8"||3/4"||1"|
For custom sizes, please consult your local sales representative or Hardox Wearparts center for flatness guarantees.
Duroxite® 201 is normally supplied in an as-welded condition, but can also be supplied in a ground condition upon request.
Welding, cutting, forming and machining
Recommendations can be found in the Duroxite® Products brochure, or consult your local technical support representative.
When welding or cutting Duroxite® products, smoke is produced containing harmful fumes and gases that are chemically highly complex and difficult to easily classify. The major toxic component in the fumes and gases produced in the process is hexavalent chromium. The proper exhaust ventilation equipment and fume-extraction torches are recommended, as well as suitable protective clothing and respiratory protection for operators.