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Abrasion Plate
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Abrasion plate refers to a group of wear resistant steel materials designed to resist surface damage caused by abrasion, impact, and friction. In industrial applications, different types of abrasion plates are selected according to working conditions such as mining, cement production, construction machinery, and bulk material handling.
The main types of abrasion plates include quenched wear steel (AR/NM grades), high manganese steel, and overlay (hardfaced) wear plates.
1. Quenched Wear Resistant Steel Plate (AR / NM Series)
This is the most common type of abrasion plate.
| Type | Typical Grades | Key Feature |
|---|---|---|
| AR Steel Plate | AR400, AR450, AR500 | High hardness through quenching and tempering |
| NM Steel Plate | NM360, NM400, NM500 | Chinese standard wear resistant steel |
Characteristics:
- High Brinell hardness (360–600 HB range)
- Martensitic microstructure
- Good balance of wear resistance and toughness
- Suitable for general industrial wear conditions
Applications:
- Mining equipment
- Dump truck liners
- Cement plant liners
- Construction machinery
2. High Manganese Steel Plate (Mn Steel)
High manganese steel is a special type of abrasion plate with work-hardening capability.
| Grade | Common Types |
|---|---|
| Mn13 | Standard manganese steel |
| Mn13Cr2 | Chromium-modified Mn steel |
| Mn18 | High manganese content steel |
| Mn18Cr2 | Enhanced wear resistance grade |
Characteristics:
- Low initial hardness (~180–220 HB)
- Becomes harder under impact (work hardening effect)
- Extremely high toughness
- Excellent resistance to impact wear
Applications:
- Crusher jaw plates
- Hammer mills
- Railway crossing components
- Heavy impact mining equipment
3. Hardfaced (Overlay) Wear Plate
Hardfaced abrasion plates are made by welding a wear-resistant alloy layer onto a base steel plate.
Structure:
- Base layer: mild or carbon steel (provides strength)
- Surface layer: high chromium carbide or alloy coating (provides wear resistance)
Characteristics:
- Extremely high surface hardness (up to 600–700 HB equivalent)
- Excellent abrasion resistance
- Customizable coating thickness
- Strong base + ultra-hard surface composite structure
Applications:
- Cement chutes and hoppers
- Mining crushers and transfer systems
- Power plant material handling systems
- Severe abrasion environments
4. Bimetal Abrasion Plate
Bimetal wear plates combine two different metals into one structure.
Features:
- Carbon steel base + alloy wear layer
- High wear resistance with good structural strength
- Cost-effective compared to solid high-hardness steel
Applications:
- Conveyor systems
- Hopper liners
- Industrial material flow systems
5. Comparison of Main Abrasion Plate Types
| Type | Wear Resistance | Toughness | Main Advantage |
|---|---|---|---|
| AR / NM Steel | Medium–High | Good | Balanced performance |
| Manganese Steel | High (impact-based) | Very High | Work hardening under impact |
| Hardfaced Plate | Very High | Medium | Extreme wear resistance surface |
| Bimetal Plate | High | Good | Cost-performance balance |
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