Bimetallic Plate for Severe Abrasion, Chute Liners, Bucket Liners, Feed Chutes, and Heavy Wear Applications
HALDEN bimetallic plate is a chromium carbide overlay wear plate made by depositing a high-chromium, carbide-rich hardfacing layer onto a weldable mild steel base plate. It combines a tough structural backing with a hard wear-resistant surface, making it suitable for abrasive material flow, sliding wear, moderate impact, and replaceable liner applications in mining, cement, power, steel, and bulk material handling.
When Ordinary Steel Plates Wear Too Fast, Bimetallic Chromium Carbide Overlay Plate Provides a Tough Base and a Hard Wear Surface.
The goal is not only higher hardness. The real value is longer liner life, less shutdown, easier replacement, and lower cost per operating hour.
Key Information Needed Before Selecting Bimetallic Plate
To recommend the right bimetallic plate, HALDEN needs to understand your wear mechanism, material handled, impact level, operating temperature, liner size, fixing method, bending or rolling requirement, drilling requirement, and expected service life.
Wear Mechanism
Bimetallic CCO plate is most effective in sliding abrasion, abrasive material flow, and combined abrasion with moderate impact.
Material Handled
Rock, sand, gravel, clinker, coal, ore, slag, ash, limestone, and other abrasive materials influence alloy selection and thickness.
Impact Angle and Speed
Wear life depends on whether material slides along the surface or impacts the plate directly at high speed.
Finished Liner Design
Cutting, bending, rolling, drilling, countersunk holes, plug weld holes, studs, and welding edges should be confirmed before production.
What Is a Bimetallic Chromium Carbide Overlay Plate?
A bimetallic plate has two functional layers: a weldable steel base plate and a chromium carbide hardfacing overlay. The base plate provides structural support and weldability. The overlay layer provides abrasion resistance through hard chromium-rich carbides in a tough matrix.
Weldable Base Plate
The base material is usually ASTM A36 / Q235B, with ASTM A529A / Q345B and other weldable steel base plates available as options.
Chromium Carbide Overlay
The hardfacing layer is an Fe-based chromium carbon alloy with high carbide hardness and strong abrasion resistance.
Custom Liner Processing
Plates can be cut, formed, drilled, plug-weld prepared, stud-welded, and fabricated into ready-to-install wear liners.
Bimetallic Plate Specification
The following specification keeps the original product data and presents it in a clearer buyer-friendly table format.
| Item | Specification |
|---|---|
| Product Name | Bimetal Plate / Bimetallic Plate / Chrome Carbide Plate / Chromium Carbide Overlay Plate |
| Base Material | ASTM A36 / Q235B |
| Optional Base Plate | ASTM A529A / Q345B; other weldable steel base plates are optional |
| Hardfacing Layer | Chromium carbon alloy on Fe basis, austenitic matrix |
| Bulk Hardness | >630 HV |
| Mean Hardness | >55 HRC |
| Layer Thickness | 3 to 30 mm |
| Type of Product | Flux cored arc welding overlay plate |
| Alloy Description | Austenitic chrome carbide iron / chromium white iron |
| Carbide Hardness | >1500 HV |
| Volume Fraction of Carbide | >30% |
| Element Composition – Carbon | 3–7.5% |
| Element Composition – Chromium | 18–35% |
| Microstructure | Chromium-rich primary carbides in a carbide-austenite eutectic matrix |
| Recommended Applications | Combined high abrasion and medium wear applications |
| Typical Applications | Wear liner, chute liner, feed chute, tractor shovel front edges, excavator bucket liner, heavy truck liner, ball mill liner, etc. |
Where Bimetallic Plate Works Best
Bimetallic chromium carbide plate is most suitable when abrasive particles slide, scrape, or flow across the surface. It can also handle moderate impact when the base plate and liner design are correctly selected.
Bimetallic Plate Selection Guide
The final plate configuration should be selected according to wear mode, impact, temperature, thickness, forming requirement, and installation method.
| Application Condition | Recommended Direction | Buyer Note |
|---|---|---|
| Severe sliding abrasion | Chromium carbide overlay plate with suitable overlay thickness | Best for chutes, hoppers, liners, and material flow surfaces. |
| Abrasion with moderate impact | Bimetallic plate with thicker base plate or composite liner design | Impact direction and particle size should be reviewed before selection. |
| Curved chute or pipe liner | Formed or rolled bimetallic plate | Bending direction, radius, and overlay crack pattern should be confirmed. |
| Bolt-on liner system | Cut-to-size plate with holes, countersunk holes, or studs | Hole layout and installation clearance should be confirmed before production. |
| High impact, low abrasion | AR steel or manganese steel may be better | CCO plate is not always the best answer for heavy direct impact. |
Custom Processing and Fabrication Options
HALDEN can supply bimetallic plate as standard plate, cut plate, fabricated liner, or ready-to-install wear component according to your drawings.
Cutting
Plate can be cut into custom liner sizes, irregular shapes, segments, strips, or replacement parts.
Forming and Rolling
Curved liners, chute sections, pipe liners, and cylindrical components can be produced according to radius requirements.
Drilling and Countersinking
Bolt holes, countersunk holes, plug weld holes, and installation slots can be prepared before delivery.
Stud Welding and Fabrication
Studs, back plates, frames, weld edges, and assembled liner packages can be prepared for faster installation.
Quality Control for Bimetallic Wear Plates
Bimetallic plate quality should be controlled through material inspection, overlay hardness testing, thickness measurement, dimensional inspection, visual inspection, and packing checks.
Important Note: Do Not Select Bimetallic Plate by Hardness Alone
The right wear plate depends on abrasion type, impact level, material flow speed, particle size, temperature, installation method, forming requirement, and replacement strategy. A very hard overlay may perform well in sliding abrasion but may not be the best solution for heavy direct impact.
What Information Should You Send for a Quotation?
To quote accurately, please send drawings, plate thickness, overlay thickness, liner size, application, material handled, and processing requirements.
Product Details
- Plate size and quantity
- Base plate thickness
- Overlay thickness
- Base material requirement
- Hardness or alloy requirement
Application Details
- Equipment name and wear location
- Material handled
- Particle size and impact level
- Operating temperature
- Current liner life and target service life
Processing Details
- Cutting drawing
- Bending or rolling radius
- Hole size and hole layout
- Stud welding or plug welding requirement
- Destination country and delivery term
Frequently Asked Questions
What is a bimetallic plate?
A bimetallic plate is a composite wear plate made from a weldable steel base plate and a hard chromium carbide overlay layer. The base plate provides structural support, while the overlay layer resists abrasion.
Is bimetallic plate the same as CCO plate?
In many industrial applications, bimetallic plate refers to chromium carbide overlay plate, also called CCO plate or chrome carbide plate.
What is the typical hardness of HALDEN bimetallic plate?
The original product specification lists bulk hardness above 630 HV and mean hardness above 55 HRC. Carbide hardness is listed above 1500 HV.
What overlay thickness is available?
The original product specification lists a hardfacing layer thickness range of 3 to 30 mm. Final selection depends on wear severity and service life target.
Can bimetallic plates be cut or drilled?
Yes. Bimetallic plates can be processed into custom liners by cutting, forming, drilling, countersinking, plug-weld preparation, and fabrication according to drawings.
Need Bimetallic Plate or Custom Chromium Carbide Wear Liners?
Send us your drawings, plate size, base plate thickness, overlay thickness, material handled, wear condition, and quantity. HALDEN can help recommend a suitable bimetallic plate configuration and processing plan.
Please include these details:
- Product type: plate, liner, chute liner, bucket liner, pipe liner, or fabricated part
- Base plate thickness, overlay thickness, overall size, and quantity
- Application equipment and wear location
- Material handled, particle size, impact level, temperature, and current liner life
- Drawing for cutting, bending, drilling, countersinking, plug welding, or stud welding
- Destination country, inspection requirement, and preferred delivery term
