- Description
Wear resistant steel plate (also known as abrasion resistant plate) is specially designed to perform in environments where friction, sliding, and impact wear are severe.
These plates are widely used in mining, construction, cement, and heavy industrial equipment.
Their performance mainly depends on hardness (HBW), toughness, and heat treatment quality.
The most common grades are AR400 / NM400, AR450 / NM450, AR500 / NM500, and AR600 / NM600.
Common Wear Resistant Plate Grades and Their Properties
| Grade | Hardness (HBW) | Yield Strength (MPa) | Tensile Strength (MPa) | Impact Toughness (J, -40°C) | Key Features | Typical Applications |
|---|---|---|---|---|---|---|
| AR360 / NM360 | 320–380 | 900–1100 | 1000–1200 | ≥30 | Good toughness and weldability; moderate wear resistance | Truck body panels, liners for loaders, cement chutes |
| AR400 / NM400 | 360–440 | 1000–1250 | 1200–1400 | ≥27 | Balanced wear resistance and formability | Construction machinery, dump truck beds, hoppers, conveyors |
| AR450 / NM450 | 420–480 | 1100–1350 | 1250–1500 | ≥25 | Higher hardness and wear life | Excavator buckets, crushers, bulldozer blades |
| AR500 / NM500 | 470–540 | 1200–1400 | 1400–1700 | ≥20 | Very high hardness; excellent abrasion performance | Mining equipment, chutes, wear liners, heavy machinery |
| AR600 / NM600 | 560–620 | 1300–1500 | 1500–1750 | ≥15 | Extreme hardness; limited formability | Knife edges, impact liners, slurry pipelines |
| High Manganese Steel (Mn13) | Work hardens up to 500 HBW | ~370 | ~900 | Very high | Excellent impact resistance; surface hardens on wear | Crusher jaws, railway crossings, impact walls |
Application Insights
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Mining and Quarrying Equipment
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Grades: AR450, AR500
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Used in hoppers, crushers, conveyor liners, and bucket edges.
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Key requirement: resistance to both sliding and impact abrasion.
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Construction Machinery
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Grades: AR400, NM400
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Used for loader buckets, bulldozer blades, and truck beds.
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Balances hardness with formability for easy fabrication.
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Cement and Concrete Plants
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Grades: AR400 – AR500
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Used for chutes, mixers, and liners exposed to sand or gravel flow.
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Power and Energy Sector
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Grades: AR400, AR500, AR600
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Used in coal handling systems, fan blades, and ash pipelines.
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Agricultural and Material Handling Equipment
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Grades: AR360 – AR450
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Used in plough blades, transport bins, and grain chutes.
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Recycling and Crushing Equipment
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Grades: AR500 – AR600, Mn13
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Used in shredders, hammer plates, and crushers under high impact.
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Selection Guide
| Condition Type | Recommended Grade | Notes |
|---|---|---|
| Moderate wear + high impact | AR360 / NM360 | Best for structural use and fabrication |
| General abrasion + good processability | AR400 / NM400 | Most commonly used, versatile |
| High wear, moderate impact | AR450 / NM450 | Longer life than AR400 |
| Extreme abrasion, limited impact | AR500 / NM500 | Maximizes wear resistance |
| Severe abrasion, no deformation allowed | AR600 / NM600 | For static wear surfaces |
| Heavy impact wear | Mn13 | Work-hardening surface increases wear life |
