Ar Plate Steel
AR plate steel includes a range of wear-resistant grades such as AR400, AR450, AR500, and extended high-hardness grades like AR550 and AR600. These materials are defined by increasing hardness levels, offering progressively higher wear resistance for more demanding working conditions.
- Description
AR plate steel (Abrasion Resistant steel plate) is a group of quenched and tempered wear-resistant steels designed to withstand sliding abrasion, impact, and heavy material wear. It is widely used in mining, construction, agriculture, cement, and bulk material handling industries.
AR grades are mainly defined by Brinell hardness (HBW), which directly reflects wear resistance performance. The most common AR plate steel grades include AR400, AR450, and AR500.
AR Series Wear Resistant Steel Grades
| Grade | Hardness (HBW) | Wear Resistance Level | Toughness | Main Characteristics | Typical Applications |
|---|---|---|---|---|---|
| AR400 | ~360–440 | Medium | Good | Balanced wear resistance and toughness, easy to process | Construction machinery, mining equipment, structural wear parts |
| AR450 | ~430–480 | High | Medium | Improved abrasion resistance with higher hardness | Heavy-duty equipment, liners, dump truck bodies |
| AR500 | ~470–540 | Very High | Medium-low | High hardness for severe abrasion environments | Mining systems, crushers, high-wear liners |
Extended AR Grades (Special Applications)
Some manufacturers also produce higher or specialized AR grades:
| Grade | Hardness (HBW) | Main Features | Typical Applications |
|---|---|---|---|
| AR550 | ~520–600 | Extremely high wear resistance | Severe mining and crushing environments |
| AR600 | ~570–650 | Maximum hardness level | Extreme abrasion and impact systems |
Performance Characteristics of AR Plate Steel
AR steel is produced through quenching and tempering heat treatment, resulting in a hardened martensitic structure. This provides:
- High surface hardness for abrasion resistance
- Good impact resistance depending on grade
- Stable performance under sliding wear conditions
- Controlled weldability with proper procedures
As hardness increases, wear resistance improves, while toughness and formability slightly decrease.
Grade Selection Principle
- AR400 → General industrial wear applications with balanced performance
- AR450 → Medium to heavy wear conditions with improved durability
- AR500 → High abrasion environments such as mining and bulk handling
- AR550–AR600 → Extreme wear and impact applications
