What is the Difference Between AR400 and AR500?
AR400 vs AR500 – Which One Should You Choose?
AR400 and AR500 are both abrasion-resistant steel grades, but they serve different performance needs depending on how tough the job is.
Main Difference: Hardness & Wear Life
| Property | AR400 Plate | AR500 Plate |
|---|---|---|
| Brinell Hardness (BHN) | 360–440 BHN | 480–550 BHN |
| Toughness | More ductile, good for impact | Harder, more resistant to abrasion |
| Weldability | Easier to weld | Needs preheat/post-weld treatment |
| Machinability | Better machinability | More difficult to machine |
| Applications | Buckets, hoppers, liners | Armor, crushers, mining, loaders |
Real-Life Example
- AR400: Ideal for OEMs and constructors fabricating buckets, blades, and dump beds where some give is needed.
- AR500: Better suited for heavy-duty mining or ballistic protection, where higher hardness extends life significantly.
Quick Buyer Tip
If you need more impact resistance + easier welding, go with AR400.
If your priority is longer wear life + abrasion protection, AR500 will outperform.
Related Alternatives:
- HIND HARD 400 (Indian AR400 equivalent)
- HIND HARD 500 (Premium Indian AR500 alternative)
- Chromium Carbide Plates (when even AR500 isn’t enough)