Technical Product Data Sheet
HALDEN Composite Wear Plate
Bimetallic chromium carbide overlay plate engineered for severe abrasion, erosion and moderate impact in mining, cement, power, steel, coal handling and bulk material systems.
- Overlay Hardness
- HRC58-65
- Carbide Phase
- Cr7C3
- Process
- FCAW
Product Definition
Bimetallic Plate Structure for Severe Wear
HALDEN Composite Wear Plate, also known as bimetallic composite wear steel plate, is manufactured by depositing a high-chromium carbide wear-resistant alloy layer onto a carbon steel, heat-resistant steel or stainless steel backing plate.
The overlay layer contains more than 50% volume fraction of Cr7C3 carbides, forming a large amount of hard phase in the microstructure. The overall surface hardness can reach approximately HRC58-65, significantly improving service life under abrasive wear conditions.
Backing Plate
Q235, Q345 and other low-carbon or low-alloy weldable structural steels are typically used to provide weldability, formability and structural support.
Overlay Layer
High C-Cr alloy with approximately 3-5% carbon and 25-40% chromium, mainly consisting of Cr7C3 carbides in a martensitic / austenitic matrix.
Standard Sizes & Models
Main Specifications
HALDEN standard composite wear plates are specified by backing plate thickness plus overlay thickness, such as 6+4 mm or 10+10 mm.
| Thickness, mm | Hardness Range | Model | Backing Material | Welding Process |
|---|---|---|---|---|
| 3+3 | HRC58-62 | WED-100/3+3 | Q235 / Q345 | FCAW |
| 6+4 | HRC58-62 | WED-100/6+4 | Q235 / Q345 | FCAW |
| 6+6 | HRC58-62 | WED-100/6+6 | Q235 / Q345 | FCAW |
| 8+6 | HRC58-62 | WED-100/8+6 | Q235 / Q345 | FCAW |
| 10+10 | HRC58-62 | WED-100/10+10 | Q235 / Q345 | FCAW |
| 12+25 | HRC58-62 | WED-100/12+25 | Q235 / Q345 | FCAW |
Standard Plate Size
1200 × 2400 mm
Standard Plate Size
1500 × 3000 mm
Standard Plate Size
2200 × 3000 mm
Custom sizes and shaped parts can be produced according to customer drawings. Cutting methods include plasma cutting, waterjet cutting and carbon arc gouging depending on the required geometry and site conditions.
Materials & Metallurgy
Alloy System and Microstructure
Alloy Composition & Carbides
The overlay alloy contains approximately 3-5% carbon and 25-40% chromium. During welding, a large amount of Cr7C3 carbide is formed, with a volume fraction exceeding 50%.
Carbide microhardness can reach approximately HV1400-1800, higher than quartz sand at approximately HV800-1200, providing strong resistance to abrasive particle cutting.
Microstructure Directionality
Carbides are distributed nearly perpendicular to the plate surface, which helps resist material sliding wear along the plate surface. The matrix is generally tempered martensite or austenite, balancing toughness and wear resistance.
Hardness & Wear Performance
Typical overlay surface hardness is HRC58-65. In room-temperature abrasive wear testing, service life is commonly 5-6 times higher than ordinary low-carbon steel, heat-treated wear steel or austenitic manganese steel, and can be higher under suitable wear mechanisms.
Processing & Installation
Hard Overlay, Weldable Base Plate
Although the overlay layer has high hardness, the backing plate remains weldable low-carbon structural steel, allowing the composite plate to be processed and installed in practical field conditions.
Cutting
Plates can be cut to required size or shape using plasma, flame cutting, waterjet or carbon arc gouging depending on thickness and dimensional requirements.
Cold Forming
With a reasonable bending radius, plates can be bent or rolled to fabricate cylinders, cones and curved liners for chutes, hoppers and material transfer equipment.
Fabrication
Composite plates can be fixed to equipment by welding or bolting and used as liners, chute walls, guide plates, hopper liners and other wear-resistant structural components.
Common Fixing Methods
- Directly weld the backing plate to the parent structure.
- Pre-machine bolt holes and fix with countersunk bolts or pins.
- Use plug welding to secure the plate to the support structure.
Engineering Benefits
Performance Advantages
Compared with single-material plates such as heat-treated wear steel, austenitic manganese steel or stainless steel, composite wear plate provides a stronger balance of wear life, processability and lifecycle cost.
Extended Wear Life
A high proportion of Cr7C3 carbides and high overlay hardness provide several times the wear life of conventional wear steel plates, extending liner replacement intervals.
Flatness & Thickness Control
HALDEN controls overlay thickness tolerance to approximately 0-0.5 mm and plate flatness to approximately 3 mm/m, supporting large-area installation and plate-to-plate alignment.
Lifecycle Economy
Although the unit price is higher than ordinary steel plate, longer service life, reduced shutdown time and lower maintenance labor create lower overall operating cost in severe wear applications.
Simplified Maintenance
Plates can be supplied as full sheets or prefabricated parts to reduce site cutting and welding. Damaged areas can be replaced locally, reducing spare part inventory and maintenance cost.
HALDEN Technical Highlights
Key Product Features
Built for technical buyers who require consistent hardness, controlled dimensions and practical installation options for high-wear equipment.
High-Chromium Overlay
High chromium content with more than 50% Cr7C3 carbide volume fraction ensures strong abrasion resistance.
High, Uniform Hardness
Overlay hardness reaches approximately HRC60 with strict thickness and flatness control.
Weldable & Processable
Weldable structural steel backing enables site cutting, forming, welding and installation.
Large Plate Formats
Multiple large-size sheet options reduce joints and improve installation efficiency.
Wide Industrial Use
Suitable for mining, coal, cement, power generation, steel and other severe wear environments involving abrasive material flow and liner systems.
Recommended Applications
For Large-Area Abrasion, Erosion and Moderate Impact
HALDEN composite wear plate is designed for equipment where material flow causes continuous sliding abrasion, particle erosion or combined wear.
- Chute liners
- Hopper liners
- Conveyor transfer points
- Guide plates
- Coal handling systems
- Cement plant liners
Engineering Support
Need a Wear Plate Specification for Your Equipment?
Send drawings, wear conditions, material type, working temperature and expected service life. HALDEN can support plate selection, thickness combination, cutting layout and installation recommendations.