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Duroxite™-Taking Durability to the Extreme

Duroxite 100

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:

  • 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

Duroxite 100

Duroxite 100

Standard overlay thicknesses

 Standard plate sizes

 Single pass

 Multiple passes

 

 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’’

Surface Hardness

Number of overlay passes 

Typical surface hardness 1) 

 Single pass  55 to 57 HRC (590 to 630 HV)
 Double passes  59 to 62 HRC (675 to 750 HV)
 Triple and more passes  60 to 64 HRC (700 to 810 HV)

 

1) Surface hardness is measured on machined flat surface just below overlay surface.

 

Wear Properties

 

Number of overlay passes 

ASTM G65 – Procedure A weight loss 2) 

 

 Surface

75% depth of overlay 3) 

 Single pass  0.25 g maximum  0.25 g maximum
 Multiple 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.


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 HK4) 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. 

4) HK is the Knoop microhardness used primarily for very brittle materials.

Duroxite microstructure

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.

Standard overlay thicknesses

Flatness tolerance over 1.5 m (5’) plate length
Metric unit (Imperial unit) 

 

Metric unit

Imperial unit

 1.8 m x 3.0 m (6’ x 10’)

2.4 m x 3.0 m (8’ x 10’) 

 Metric unit

 Imperial unit

 Metric unit

 Imperial unit

 5 mm on 8 mm  3/16’’ on 5/16’’  25 mm  1’’  41 mm  1-5/8’’
 6 mm on 6 mm  1/4’’ on 1/4’’  25 mm  1’’  Not available
 10 mm on 10 mm  3/8’’ on 3/8’’  12 mm  1/2’’  25 mm  1’’
 12 mm on 12 mm  1/2’’ on 1/2’’  6 mm  1/4’’  16 mm  5/8’’

 

For custom sizes, please consult your local sales representative or Hardox Wearparts center for flatness guarantees.

Duroxite 100 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 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.