Duroxite® 100
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Duroxite 100
Duroxite 100
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General Product Description
Duroxite® 100 is manufactured by depositing chromium-rich, abrasion-resistant materials on a mild steel base plate using a traditional arc welding process. The hardfacing overlay plate is suitable for severe abrasive wear and moderate to low impact applications. The multiple-layer overlay is also capable of maintaining full wear resistance up to 350 ºC (660ºF) and the typical surface hardness of 55 HRC at elevated temperatures up to 540°C (1000°F). Duroxite® 100 is available in single layers or multiple layers up to 20 mm (3/4”) in overlay thickness.
Key Benefits
- Same wear resistance guaranteed from surface down to 75% of the overlay
- Optimal carbide composition to provide good combination of wear resistance and homogenous bonding
- Good formability due to staggered cracking pattern on overlay surface
Typical Applications
Duroxite® 100 is widely used in the mining, power generation, cement, dredging, steel production, waste handling, glass production, and pulp and paper industries. Some specific applications include:
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| Mining | Chutes/hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators |
|---|---|
| Cement | Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers |
| Dredging | Dredging pipes and pumps, suction pipelines, pump discharges |
| Steel | Fan blade/housings, coke vibrating screen plates |
| Power | Coal handling chutes, coal feeder liners, crusher screen plates, classifier cones, journal liners, silo bunkers |
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Mining
Chutes/hoppers, liners for truck beds, dozer blades, shovel buckets, dragline buckets, excavators
Cement
Separator guide vanes, discharge cones for clinker storage bins, chutes for sintering ore conveying, outlet ducts for clinker grinding mills, receiving hoppers
Dredging
Dredging pipes and pumps, suction pipelines, pump discharges
Steel
Fan blade/housings, coke vibrating screen plates
Power
Coal handling chutes, coal feeder liners, crusher screen plates, classifier cones, journal liners, silo bunkers
For more information on applications see the Duroxite® Product brochure.
Standard Dimensions
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| Metric unit | Metric unit |
|---|---|
| 3 mm on 6 mm | 6 mm on 6 mm |
| 5 mm on 8 mm | 6 mm on 10 mm |
| — | 10 mm on 10 mm |
| — | 12 mm on 12 mm |
| — | 20 mm on 10 mm |
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Metric unit
3 mm on 6 mm
Metric unit
6 mm on 6 mm
Metric unit
5 mm on 8 mm
Metric unit
6 mm on 10 mm
Metric unit
—
Metric unit
10 mm on 10 mm
Metric unit
—
Metric unit
12 mm on 12 mm
Metric unit
—
Metric unit
20 mm on 10 mm
Other plate sizes and custom thicknesses can be produced upon request.
Standard plate sizes
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| Metric unit | Imperial unit |
|---|---|
| 1.2 m x 2.4 m | 4' x 8' |
| 1.4 m x 3.0 m | 4.6' x 10' |
| 1.5 m x 3.0 m | 5' x 10' |
| 1.8 m x 3.0 m | 6' x 10' |
| 2.4 m x 3.0 m | 8' x 10' |
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Metric unit
1.2 m x 2.4 m
Imperial unit
4' x 8'
Metric unit
1.4 m x 3.0 m
Imperial unit
4.6' x 10'
Metric unit
1.5 m x 3.0 m
Imperial unit
5' x 10'
Metric unit
1.8 m x 3.0 m
Imperial unit
6' x 10'
Metric unit
2.4 m x 3.0 m
Imperial unit
8' x 10'
Other plate sizes and custom thicknesses can be produced upon request.
Mechanical Properties
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| Number of overlay passes | Typical surface hardness1) (HRC) | Typical surface hardness1) (HV) | Surface(g max) | 75 % depth of overlay 3)(g max) |
|---|---|---|---|---|
| Single pass | 55 - 57 | 590 - 630 | 0.25 | 0.25 |
| Double passes | 59 - 62 | 675 - 750 | 0.18 | 0.18 |
| Triple and more passes | 60 - 64 | 700 - 810 | 0.18 | 0.18 |
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Number of overlay passes
Single pass
Typical surface hardness1) (HRC)
55 - 57
Typical surface hardness1) (HV)
590 - 630
Surface(g max)
0.25
75 % depth of overlay 3)(g max)
0.25
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Number of overlay passes
Double passes
Typical surface hardness1) (HRC)
59 - 62
Typical surface hardness1) (HV)
675 - 750
Surface(g max)
0.18
75 % depth of overlay 3)(g max)
0.18
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Number of overlay passes
Triple and more passes
Typical surface hardness1) (HRC)
60 - 64
Typical surface hardness1) (HV)
700 - 810
Surface(g max)
0.18
75 % depth of overlay 3)(g max)
0.18
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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.
Microstructure
The microstructure of Duroxite® 100 is composed of a high proportion of extremely hard primary M7C3 chromium-rich carbides with a typical hardness of 1700 HK*) dispersed evenly in a ductile eutectic austenite matrix. The volume fraction of primary carbides is maintained between 30 to 50% to provide a good combination of wear resistance and homogenous bonding.
*)HK is the Knoop microhardness used primarily for very brittle materials.
Tolerances
Thickness
Overall and overlay thickness tolerances can be guaranteed within ±10% of specified thickness.
Flatness
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.
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| Metric unit | 1.8 m x 3.0 m | 2.4 m x 3.0 m |
|---|---|---|
| 5 mm on 8 mm | 25 mm | 41 mm |
| 6 mm on 6 mm | 25 mm | 38 mm |
| 10 mm on 10 mm | 12 mm | 25 mm |
| 12 mm on 12 mm | 6 mm | 16 mm |
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Comparison
Metric unit
5 mm on 8 mm
1.8 m x 3.0 m
25 mm
2.4 m x 3.0 m
41 mm
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Metric unit
6 mm on 6 mm
1.8 m x 3.0 m
25 mm
2.4 m x 3.0 m
38 mm
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Metric unit
10 mm on 10 mm
1.8 m x 3.0 m
12 mm
2.4 m x 3.0 m
25 mm
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Metric unit
12 mm on 12 mm
1.8 m x 3.0 m
6 mm
2.4 m x 3.0 m
16 mm
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For custom sizes, please consult your local sales representative or Hardox Wearparts center for flatness guarantees.
Delivery Conditions
Duroxite® 100 is normally supplied in an as-welded condition, but can also be supplied in a ground condition upon request.
Fabrication and Other Recommendations
Welding, cutting, forming and machining
Recommendations can be found in the Duroxite® Product brochure, or consult your local technical support representative.
Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the product.
Safety precautions
When welding or cutting Duroxite® products, gases and harmful fumes are produced that are chemically complex and difficult to classify. The major toxic component in the fumes 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.